🧈 Professional Kitchen · Sauces
Master Butter Emulsion: Five Professional Variations
One glossy butter-and-water emulsion becomes five service-ready sauces: sriracha, miso, kombu, chicken and smoky bacon.
Behind the plate
A reliable butter emulsion is one of the most useful foundations on the pass. It has the richness of melted butter, but its smooth, cohesive texture allows it to carry acidity, aromatics and concentrated stocks without turning greasy.
This is a production-scale master recipe designed for a professional kitchen. Make the base first, then take only what you need for service and turn it into one of five distinct finishes—from bright sriracha butter to a deeply savoury bacon emulsion.
Why this recipe works
Melting three quarters of the butter into the water creates the first emulsion; gradually whisking in the final quarter tightens and cools it. A brief blend makes the sauce uniform and glossy. Gentle heat is essential—a hard boil can force the butterfat and water apart.
The recipe
Ingredients
- 4,000 g unsalted butter, diced
- 1,600 g water
Method
- Place the water and 3,000 g of the diced butter in a large, heavy-based saucepan. Heat gently, stirring occasionally, until the butter has melted and the liquid is just beginning to simmer.
- Lower the heat. Add the remaining 1,000 g butter gradually while whisking continuously, allowing each addition to emulsify before adding more.
- Blend briefly with a hand blender until completely smooth, cohesive and glossy. Do not allow the emulsion to boil.
- Use immediately over very gentle heat, or cool rapidly in a shallow container and refrigerate. Reheat carefully while whisking; never bring it to a hard simmer.
Chef’s notes
- Temperature is the control point: keep the emulsion below a hard simmer at every stage.
- If the sauce begins to split, take it off the heat and blend in a splash of cool water or a few cubes of cold butter.
- Season each variation only after its flavouring ingredients have been incorporated; miso, MSG, stock and bacon all contribute salt.
- For smaller batches, scale every weighed ingredient by the same percentage rather than changing the butter-to-water ratio.
- Cool any sauce for storage rapidly in a shallow, food-safe container and follow your kitchen’s time-and-temperature controls.
At the table
Spoon the sriracha or miso butter over roasted vegetables, use kombu emulsion with shellfish, finish market fish with the chicken variation, and pair bacon butter with cabbage, potatoes or grilled meat. The plain master emulsion is also an excellent finishing base for seasonal herbs, citrus and reduced stocks.
Variations
Sriracha Butter
A bright, spicy finish with mellow confit garlic and two layers of lemon acidity.
- Master butter emulsion, as needed
- 15 g confit garlic
- 20–40 g sriracha, depending on the heat required
- Lemon juice, to taste
- Pickled lemon juice, to taste
- Fine salt, to taste
- Warm the required amount of master butter emulsion gently without boiling.
- Whisk in the confit garlic, sriracha and a little of both lemon juices.
- Whisk firmly or blend with a hand blender until smooth. Taste, then adjust the acidity, heat and salt.
Miso Emulsion
An ivory, umami-rich sauce with white miso, confit garlic and clean citrus lift.
- Master butter emulsion, as needed
- 15 g confit garlic
- 30 g white miso paste
- 5 g lemon juice
- Pickled lemon juice, to taste
- Fine salt, only if needed
- Warm the required amount of master butter emulsion gently.
- Whisk in the white miso, confit garlic and lemon juice.
- Blend until perfectly smooth, then finish with pickled lemon juice. Taste before adding salt because miso is already well seasoned.
Kombu Emulsion
A deeply savoury, sea-scented butter designed for fish, shellfish and roasted vegetables.
- Master butter emulsion, as needed
- 2 g kombu seaweed powder
- 5 g MSG
- 6 g confit garlic
- 10 g lemon juice
- Fine salt, to taste
- Warm the required amount of master butter emulsion over gentle heat.
- Add the confit garlic, kombu powder, MSG, lemon juice and a small pinch of salt.
- Blend with a hand blender until completely smooth. Rest briefly, taste and adjust the salt or lemon juice before serving.
Chicken Emulsion for Market Fish
A glossy, savoury sauce that combines concentrated chicken stock with butter and lemon for a rich fish finish.
- Chicken stock, as needed
- Master butter emulsion, as needed
- 30 g lemon juice
- 15 g pickled lemon juice
- Fine salt, to taste
- Pour the chicken stock into a clean saucepan and reduce over medium heat until concentrated and lightly thickened.
- Lower the heat and whisk in enough master butter emulsion to create a smooth, spoon-coating sauce.
- Add the lemon juice and pickled lemon juice. Season with salt, blend briefly if needed and serve without boiling.