Module 2: Mother sauces & emulsions from scratch

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Introduction: the sauce is the secret

Walk into any great restaurant kitchen and you will find the same quiet truth: the plate is simple, and the sauce is what makes it unforgettable. A piece of roasted fish, a pile of steamed asparagus, a grilled steak with a handful of bitter leaves. None of it is complicated. But a spoonful of glossy hollandaise, a ribbon of herb butter melting into the heat, a pan sauce scraped up from the bottom of the pan: that is what turns dinner into an occasion.

For a way of eating built on good fats, whole foods and plenty of vegetables, sauces are not a garnish. They are the engine. Fat carries flavour and helps you feel satisfied. Emulsions turn plain vegetables into something you actually crave. And a cook who owns six or seven sauces never gets bored, because the same roast chicken and broccoli become six different dinners.

This module teaches the gourmet backbone of the kitchen. Everything here is made from scratch, with no bottles, powders or thickeners. And none of it needs flour or cornstarch. Classic French sauces were built on butter, egg yolk, wine, vinegar and reduction long before anyone thickened things with starch, so they are naturally low in carbohydrate and rich in flavour.

Three principles for the whole module

1. Always organic. A sauce has nowhere to hide. With so few ingredients, the quality of the butter, eggs, oil, lemons and herbs is the quality of the result. Choose organic butter (ideally grass-fed), organic pastured eggs, organic cold-pressed oils, organic lemons and fresh organic herbs.
2. Every sauce meets a green. Each recipe ends with pairings that include vegetables and leaves. The sauce is the reason to eat more greens, not less.
3. Failure is fixable. Every emulsion in this module can split. Every one has a rescue. Read the rescue before you start and you will cook with calm hands. A broken sauce is a two-minute detour, never a disaster.

The one idea behind every emulsion

An emulsion is simply fat and water held together as tiny droplets. They want to separate, so we give them a mediator (egg yolk, or the milk solids in butter) and add the fat slowly. Master three habits and every sauce here works:

• Gentle heat. Eggs scramble above about 70°C (160°F). Warm, never hot.
• Slow fat. Add the fat a drip at a time at first, then in a thin stream, whisking constantly.
• Right thickness. If a sauce is too thick it is about to split; a teaspoon of warm water loosens and protects it.

Kit list

A medium heatproof bowl or small saucepan, a balloon whisk, a small heavy pan, a fine sieve, a silicone spatula, a ladle, a thermometer (helpful, not essential), and a hand blender or jar for the cold emulsions. A damp tea towel under the bowl stops it spinning while you whisk.

About the carb counts

Net carbs are approximate and given per serving, using typical values for organic ingredients. Natural variation exists. Wine in sauces cooks down and most of its sugar is lost, but treat the numbers as guides.

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Recipe 1: Hollandaise (from scratch)

Warm, lemony, impossibly silky: the sauce that makes a plate of asparagus taste like a celebration.

Yield: about 250 ml (1 cup), 4 generous servings · Active time: 15 min · Total time: 20 min Net carbs: about 0.8 g per serving (Ketogeni estimate from food tables; it varies with brands and portions).

Ingredients

• 3 large organic egg yolks
• 1 Tbsp (15 ml) water
• 175 g (¾ cup, 1½ sticks) organic unsalted butter, melted and kept warm
• 1 Tbsp (15 ml) fresh organic lemon juice, plus more to taste
• ¼ tsp fine sea salt
• Pinch of white pepper or cayenne

Method

1. Clarify the butter (optional but foolproof). Melt the butter in a small pan over low heat. Skim the foam. Pour off the golden butter, leaving the milky solids behind. Keep it warm, not hot.
2. Set up a gentle bain-marie. Bring 3 cm (1 in) of water to a bare simmer in a saucepan. Sit a heatproof bowl on top so its base does not touch the water. Put a damp towel under your work surface.
3. Whisk the yolks. In the bowl, whisk the yolks with the tablespoon of water for about 1 minute, until pale, thick and doubled in volume, with ribbons that hold for a second.
4. Add the butter by drips. Take the bowl off the heat if it feels hot. Add the warm butter a few drops at a time, whisking constantly. When the sauce begins to thicken, add it in a slow thin stream.
5. Season. Whisk in the lemon juice, salt and pepper. Taste. It should be bright and rich. Add more lemon if it needs lifting.
6. Adjust thickness. If too thick, whisk in 1 tsp warm water at a time.
7. Serve right away, or hold in a warm (not hot) bowl for up to 30 minutes.

Chef's tips

• If it looks scrambled or grainy: it got too hot. Take it off the heat, whisk in a tablespoon of cold water, and pass through a fine sieve.
• If it splits (oily and curdled): put a fresh yolk and 1 tsp water in a clean bowl, whisk, then drip the broken sauce in slowly like it was butter. It comes back every time.
• Blender shortcut: put the yolks, water and lemon in a blender. With the motor running, pour in the hot melted butter in a thin stream. Seconds, not minutes, and very reliable.
• Do not let the sauce sit near the stove. It dislikes heat even more than it dislikes waiting.

Pair with greens

Steamed or roasted asparagus; broccoli florets; poached eggs on wilted spinach (a classic Benedict without the muffin); grilled courgette; green beans; salmon on a bed of watercress.

Variations

• Maltaise: swap lemon for blood-orange juice and a little zest (add 0.5 g carbs).
• Mustard hollandaise: whisk in 1 tsp Dijon (check it has no added sugar).
• Herb: fold in 1 Tbsp finely chopped organic chives or dill.
• Smoked paprika or chipotle: for roasted cauliflower and eggs.

Make-ahead / storage

Best eaten fresh. Hold up to 30 minutes in a warm bowl set over warm (not hot) water. Leftovers keep covered in the refrigerator 1 day; rewarm by whisking a spoonful at a time into a spoonful of warm water, never over direct heat.

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Recipe 2: Béarnaise (from scratch)

Hollandaise's more glamorous cousin: tarragon, shallot and a sharp vinegar reduction, made for steak.

Yield: about 250 ml (1 cup), 4 servings · Active time: 25 min · Total time: 30 min Net carbs: about 2 g per serving (Ketogeni estimate from food tables; it varies with brands and portions).

Ingredients

The reduction

• 2 Tbsp finely minced organic shallot (about 1 small)
• 60 ml (¼ cup) organic white wine vinegar
• 60 ml (¼ cup) dry white wine or water
• 1 Tbsp fresh organic tarragon stems, chopped (save the leaves)
• ½ tsp crushed black peppercorns

The sauce

• 3 large organic egg yolks
• 175 g (¾ cup) organic unsalted butter, melted and warm
• 1 Tbsp finely chopped fresh organic tarragon leaves
• 1 tsp chopped fresh organic chervil or parsley
• Fine sea salt and a squeeze of lemon, to taste

Method

1. Make the reduction. In a small pan, simmer the shallot, vinegar, wine, tarragon stems and pepper until reduced to about 2 Tbsp of intensely flavoured liquid. It should look almost syrupy.
2. Strain and cool. Press through a fine sieve into the bowl you will use for the sauce, squeezing out all the liquid. Let it cool for 2 minutes.
3. Add yolks and whisk over gentle heat. Add the yolks and 1 Tbsp water. Set the bowl over a pan of barely simmering water and whisk until pale, thick and ribbony.
4. Add the butter. Off the heat, whisk in the warm butter drop by drop, then in a thin stream, as for hollandaise.
5. Finish. Fold in the tarragon and chervil. Season with salt and lemon. Thin with a teaspoon of warm water if needed.
6. Serve warm over steak, fish or vegetables.

Chef's tips

• The reduction should smell sharp but not harsh. If it is too acidic, it needs more wine.
• Rescue: identical to hollandaise. Start a fresh yolk with 1 tsp water, then whisk the broken sauce in slowly.
• Fresh tarragon is essential. Dried tastes like hay.

Pair with greens

Seared steak with a mountain of roasted green beans or sautéed spinach; poached white asparagus; grilled lamb chops with watercress; roast chicken with steamed broccolini; artichoke hearts.

Variations

• Choron: whisk in 1 Tbsp tomato paste (adds about 1 g carbs per serving).
• Foyot (Valois): stir in 1 Tbsp reduced meat glaze or concentrated bone broth.
• Paloise: replace tarragon with fresh mint, for lamb.

Make-ahead / storage

Make the reduction up to 3 days ahead and refrigerate. Finish the sauce just before serving. Same holding rules as hollandaise.

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Recipe 3: Beurre blanc

A feather-light white-wine butter sauce, glossy and sharp: fish and green vegetables dress up instantly.

Yield: about 180 ml (¾ cup), 4 servings · Active time: 15 min · Total time: 20 min Net carbs: about 1.6 g per serving (Ketogeni estimate from food tables; it varies with brands and portions).

Ingredients

• 2 Tbsp finely minced organic shallot
• 80 ml (⅓ cup) dry white wine
• 2 Tbsp white wine vinegar
• 2 Tbsp (30 ml) organic double (heavy) cream (optional, makes it very stable)
• 170 g (¾ cup) cold organic unsalted butter, cut into 1 cm cubes
• Sea salt, white pepper, squeeze of lemon

Method

1. Reduce. In a small, heavy, non-reactive saucepan, simmer shallot, wine and vinegar until reduced to about 2 Tbsp, nearly dry and glossy.
2. Add cream (if using) and simmer for 1 minute until slightly thickened. This is your insurance policy.
3. Mount the butter. Turn heat to low. Add cold butter 2–3 cubes at a time, whisking continuously. Wait until each addition has almost melted before adding the next.
4. Keep it warm, never hot. Lift the pan off the heat now and then. The sauce should look creamy and pale, never oily.
5. Season with salt, pepper and lemon. Strain for restaurant polish or leave the shallots in for rustic character.
6. Serve immediately.

Chef's tips

• Cold butter, low heat is the whole secret. If it ever looks greasy, take it off the heat at once.
• Rescue: whisk in 1 Tbsp cold cream or 1 Tbsp cold water, off the heat, or blend a splash of the broken sauce with an ice cube. It re-emulsifies.
• Do not reheat over direct heat. Keep it in a warm thermos or a bowl over warm water.

Pair with greens

Pan-fried white fish or scallops over buttered leeks; steamed green beans; wilted spinach and lemon sole; asparagus; sautéed kale; poached salmon with samphire or fennel.

Variations

• Lemon-caper: add 1 Tbsp drained capers and zest.
• Saffron: infuse a pinch of saffron in the reduction.
• Red-wine beurre rouge: use dry red wine for steak.
• Herb: finish with chopped chives, parsley and dill.

Make-ahead / storage

Best made fresh. A thermos filled with warm water, tipped out, then filled with the sauce will hold it for up to 1 hour. Not suitable for freezing.

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Recipe 4: Compound butters (a small family)

Flavoured butter rolled in a log: three flavours, five minutes each, and an instant sauce for anything hot.

Yield: about 150 g (⅔ cup) each, 8–10 servings · Active time: 10 min each · Total time: 10 min plus 1 hr chilling Net carbs: about 0.5 g per serving (Ketogeni estimate from food tables; it varies with brands and portions).

Base method

Use 150 g (⅔ cup) organic unsalted butter, softened until it dents with a finger but is not oily.

1. Soften the butter at room temperature for about 1 hour.
2. Mix. Beat with a spatula until smooth, then fold in the flavourings of your choice (below).
3. Roll. Spoon onto a sheet of baking parchment. Fold the paper over and roll into a log about 3 cm (1¼ in) wide, twisting the ends like a sweet.
4. Chill for at least 1 hour until firm.
5. Slice into coins and place on hot food just before serving.

The three flavours

A. Herb & garlic butter

• 2 Tbsp finely chopped organic parsley
• 1 Tbsp chopped organic chives
• 1 small organic garlic clove, grated
• 1 tsp lemon zest, ½ tsp sea salt

B. Anchovy & lemon butter

• 4 anchovy fillets in olive oil, mashed to a paste
• 1 tsp lemon zest and 1 tsp lemon juice
• 1 Tbsp chopped parsley, black pepper (little salt needed)

C. Café de Paris butter (a quick version)

• 1 shallot, finely minced
• 1 tsp Dijon mustard (sugar-free)
• 2 anchovies, mashed
• 1 tsp capers, finely chopped
• 1 Tbsp each chopped parsley and chives, 1 tsp chopped tarragon
• ½ tsp curry powder, pinch of paprika, 1 tsp lemon juice
• 1 tsp brandy or lemon juice, salt to taste

Chef's tips

• If it looks greasy or separated: the butter was too warm. Chill the bowl for 10 minutes and beat again.
• If it is too soft to roll: chill the mixture 15 minutes first.
• Use whole fresh herbs, never dried, for colour and fragrance.
• Slice one coin onto steak, fish, grilled chicken or hot vegetables and let it melt into a sauce at the table.

Pair with greens

Herb butter melted over steamed broccoli, green beans, courgette ribbons or a baked portobello. Anchovy butter on grilled lamb with sautéed kale. Café de Paris on steak with a watercress salad or roasted Brussels sprouts.

Variations

• Garlic-chilli: garlic, chilli flakes, lime zest.
• Roquefort or blue cheese butter: for steak.
• Seaweed butter: finely chopped dulse or nori and lemon, for fish.
• Wild garlic or ramsons butter in spring.

Make-ahead / storage

Refrigerated, logs keep 1 week. Frozen, wrapped well, up to 3 months. Slice straight from the freezer.

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Recipe 5: Mayonnaise & aioli (from scratch)

A jar of pale-gold mayonnaise made in three minutes: better than any shop version, and the base for a dozen sauces.

Yield: about 300 ml (1¼ cups), 10 servings · Active time: 5 min · Total time: 5 min Net carbs: about 0.2 g per serving (Ketogeni estimate from food tables; it varies with brands and portions).

Ingredients

• 1 large organic egg yolk (or 1 whole egg for the blender method), at room temperature
• 1 tsp Dijon mustard (sugar-free)
• 1 Tbsp fresh organic lemon juice or white wine vinegar
• 240 ml (1 cup) mild oil: organic light olive oil, avocado oil or half olive, half avocado
• ½ tsp fine sea salt

Method (whisk)

1. Start the base. In a medium bowl, whisk the yolk, mustard, lemon juice and salt until smooth. Set the bowl on a damp towel.
2. Add the oil by drops. Whisk constantly, adding the oil literally drop by drop for the first 2 tablespoons.
3. Thin stream. Once it looks thick and creamy, add the rest of the oil in a slow, steady stream, whisking all the while.
4. Taste. Add more salt, lemon or mustard. Thin with a teaspoon of water if too stiff.

Method (immersion blender, foolproof)

1. Put 1 whole egg, the mustard, lemon juice, salt and oil in a tall jar just wider than the blender head.
2. Press the blender flat to the base and switch on. Hold still for 10 seconds as white mayonnaise forms at the bottom.
3. Slowly lift the blender to bring up the rest of the oil.

Aioli

Grate 1–2 organic garlic cloves into the lemon juice and let it sit 5 minutes, then proceed. For a Provençal-style aioli, use a fruity extra virgin olive oil for half the oil. Pure extra virgin alone can be bitter.

Chef's tips

• Everything at room temperature. Cold eggs and oil make mayonnaise reluctant.
• Rescue a split mayonnaise: put 1 tsp mustard (or a fresh yolk) and 1 tsp water in a clean bowl, then whisk the broken mayonnaise into it a spoonful at a time.
• A mild oil is kinder than bold extra virgin; its bitterness sharpens in the blender.
• Raw egg: use fresh organic eggs and keep the jar cold. Anyone vulnerable (pregnancy, very young or elderly) should use a pasteurised egg.

Pair with greens

Crisp raw vegetables (celery, cucumber, radish, fennel); steamed artichokes with aioli; green-bean salad; roasted broccoli; egg and avocado on lettuce cups; tuna on endive leaves; deviled eggs on rocket.

Variations

• Lemon-herb: chives, tarragon, dill.
• Chipotle-lime, harissa, saffron, wasabi.
• Roasted garlic aioli: mash 4 roasted cloves in.
• Ranch-style: mayonnaise, double cream, herbs, garlic.
• Tartare: chopped capers, cornichons (sugar-free) and shallot.

Make-ahead / storage

Keeps in a clean jar in the refrigerator for 4–5 days (homemade, raw egg). Do not freeze.

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Recipe 6: Master vinaigrette + three emulsified dressings

One ratio to memorise, and three dressings that make a bowl of leaves the thing everyone fights over.

Yield: about 180 ml (¾ cup) each · Active time: 5 min each · Total time: 5–10 min Net carbs: about 1.3 g per serving (Ketogeni estimate from food tables; it varies with brands and portions).

The master vinaigrette (3 : 1)

• 90 ml (6 Tbsp) organic extra virgin olive oil
• 30 ml (2 Tbsp) acid: organic red or white wine vinegar, sherry vinegar or lemon juice
• 1 tsp Dijon mustard (the emulsifier)
• ½ tsp fine sea salt, fresh black pepper
• 1 small shallot, finely minced (optional)

Method

1. Macerate. Stir the shallot into the vinegar with the salt and let sit for 5 minutes. This softens the bite.
2. Add mustard. Whisk in the Dijon.
3. Stream in the oil. Whisk while pouring in the oil slowly. It thickens slightly and turns opaque.
4. Taste on a leaf, not on a spoon. Adjust salt and acid. Dress leaves lightly, just enough to gloss them.

Jar method: shake everything in a jar for 20 seconds.

Variation 1: Creamy lemon-tahini dressing

Whisk 2 Tbsp organic tahini, 3 Tbsp lemon juice, 1 small grated garlic clove, ½ tsp salt and 4–5 Tbsp cold water until smooth and pale. Add the water gradually, since it first seizes then loosens. Net carbs ~1 g per 2 Tbsp. Over: roasted cauliflower, raw kale, grilled courgette.

Variation 2: Caesar-style (no croutons needed)

Whisk 1 egg yolk, 3 mashed anchovies, 1 grated garlic clove, 1 Tbsp lemon juice, 1 tsp Dijon and ½ tsp Worcestershire (check for sugar). Stream in 90 ml olive oil. Stir in 3 Tbsp finely grated aged Parmesan. Net carbs ~0.5 g per 2 Tbsp. Over: crisp romaine, chicken, rocket, boiled egg and roasted broccoli.

Variation 3: Green goddess

Blend ½ ripe avocado, 3 Tbsp mayonnaise (Recipe 5), 1 large handful of herbs (parsley, chives, tarragon, basil), 1 anchovy, 1 Tbsp lemon juice, 1 small garlic clove and 2–3 Tbsp water until smooth and vividly green. Net carbs ~1 g per 2 Tbsp. Over: a crunchy raw-vegetable board, shredded cabbage slaw, cucumber and prawn salad.

Chef's tips

• Dressing split into oil and vinegar? Whisk in another ½ tsp mustard, or a teaspoon of warm water. Or simply shake it hard just before serving. It is meant to be remixed.
• Too sharp: more oil. Too flat: more salt first, then acid.
• Dress leaves at the last moment, in a large bowl with your hands, and use less than you think.

Make-ahead / storage

Master vinaigrette keeps 1–2 weeks in the refrigerator (olive oil may solidify; rest at room temperature 10 minutes). Dressings with egg, tahini or avocado keep 3–4 days.

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Recipe 7: Pan sauce & reduction (the deglaze technique)

The restaurant finish in three minutes: all the browned flavour left in the pan becomes your sauce.

Yield: about 120 ml (½ cup), 2–4 servings · Active time: 8 min · Total time: 10 min Net carbs: about 1.5 g per serving (Ketogeni estimate from food tables; it varies with brands and portions).

Ingredients

• The pan you have just cooked steak, chicken thighs, pork chops or fish in (do not wash it)
• 1 Tbsp finely minced organic shallot
• 60 ml (¼ cup) dry white wine, dry red wine or brandy
• 120 ml (½ cup) good organic bone broth or stock (unsalted or low-salt)
• 1 tsp Dijon mustard or 1 Tbsp double cream (optional)
• 2 Tbsp cold organic unsalted butter, cubed
• 1 tsp chopped fresh organic herbs (thyme, tarragon, chives or parsley)
• Salt, pepper, squeeze of lemon

Method

1. Rest the meat. Move the cooked protein to a warm plate and let it rest. Pour off all but 1 Tbsp of fat. The brown crust left in the pan (the fond) is the flavour.
2. Sweat the shallot. Over medium heat, cook the shallot in the fat for 1 minute until soft.
3. Deglaze. Pour in the wine (off the heat if using brandy). Scrape the pan with a wooden spoon, lifting every brown bit. Simmer until reduced by about two thirds.
4. Add stock. Pour in the broth and boil until reduced by half, 3–4 minutes, to a lightly syrupy sauce that coats a spoon.
5. Add flavour. Stir in mustard or cream if using, and any resting juices from the plate.
6. Mount with butter. Turn the heat to low. Swirl in the cold butter, one cube at a time, until glossy.
7. Finish. Stir in herbs, salt, pepper and lemon. Spoon over the meat. Serve at once.

Chef's tips

• Dark and bitter: the fond was burnt. Add a splash more stock and strain, or start with a clean pan and a spoonful of butter.
• Too thin: simmer longer. Too salty: you reduced too far; add a splash of water or cream.
• If the butter splits: take off the heat and whisk in 1 tsp cold water or cream.
• Match wine to protein: white wine for chicken and fish, red or brandy for beef, apple cider vinegar splash for pork.

Pair with greens

Steak with sautéed spinach or garlicky green beans; chicken thighs with braised kale or Savoy cabbage; pork chops with roasted Brussels sprouts; salmon with wilted chard; mushrooms and spinach as a vegetarian pan sauce base.

Variations

• Mushroom pan sauce: brown 100 g sliced mushrooms first (+1 g carbs).
• Mustard-cream: Dijon plus 3 Tbsp cream, for chicken or pork.
• Peppercorn: 1 Tbsp crushed green peppercorns, brandy and cream.
• Lemon-caper: white wine, capers, lemon, parsley, for fish.
• Red wine & thyme: for beef.

Make-ahead / storage

Best made fresh. The reduced stock base (before butter) keeps 3 days refrigerated; reheat and mount with butter at the end.

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Troubleshooting at a glance

Module 2 plate ideas (sauce + protein + greens)

• Hollandaise + poached salmon + asparagus + watercress
• Béarnaise + seared steak + garlicky green beans
• Beurre blanc + pan-fried cod + buttered leeks and spinach
• Café de Paris butter + grilled steak + roasted Brussels sprouts
• Aioli + roast chicken + crisp raw fennel, radish and celery
• Caesar-style dressing + grilled chicken + romaine and broccoli
• Pan sauce + pork chop + braised cabbage and kale

Practice order

Begin with compound butter (no risk), then vinaigrette, blender mayonnaise, pan sauce, hollandaise by blender, beurre blanc, and finally béarnaise by whisk. By the end you will have a repertoire that makes any plain, simple, organic meal feel like dinner out.

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This module is a cooking course. It is not medical advice and makes no health claims. Always use fresh, organic ingredients, and take care with raw eggs if you are cooking for anyone pregnant, elderly or very young.