Lemon & dill butter sauce (Beurre Blanc style)

This sauce builds on French 'Beurre Blanc' technology, but with a small safety net. Classic butter sauces are unstable: if overheated, they split into oil and protein. Here cream acts as an emulsifier, helping bind fat and water (wine), giving us a silky, rich, yet stable sauce. Dill freshness perfectly counterbalances butter richness.
🕒 Prep Time 10 mins
🍳 Cook Time 15 mins
Total Time 25 mins
🍽️ Servings 4 servings
🔥 Calories 220 kcal
🌍 Cuisine Scandinavian / French

Ingredients

Equipment Needed

  • Whisk: Essential for creating emulsion.
  • Heavy-bottomed saucepan: For precise temperature control.

Allergen Information

⚠️ Milk
⚠️ Sulphur dioxide

Instructions

1

Chop shallot as finely as possible.

Tip: We don't want large onion pieces in silky sauce.
2

Place onion and white wine in saucepan. Boil until wine almost completely evaporates, leaving only wet onion pulp (approx. 1-2 tbsp).

Tip: This is called reduction. Water leaves, flavour concentrates.
3

Pour in cream, and reduce by half with gentle boiling.

Tip: Cream is the stabiliser here. If thick enough, it will 'hold' the butter.
4

Lower flame to lowest (or remove from heat). Add cold butter cubes in 2-3 batches, whisking continuously.

Tip: This is called mounting (monter au beurre). Cold butter melts slowly, creating creamy emulsion instead of oil.
5

Do not let boil! Just let butter melt in.

Tip: If it boils, emulsion splits.
6

Remove from heat permanently. Stir in chopped dill and lemon juice.

Tip: Add lemon juice only at end, as acid can curdle cream during boiling.
7

Serve immediately.

Tip: This sauce doesn't wait. If heating needed, only do so over lukewarm water bath.

Recipe FAQ

Oil separated (sauce split).
Overheated. Remove from heat, add a tablespoon of cold water or cream, and whisk wildly until it comes together.
Too sour.
Wine acidity dominates. Add a little more butter or cream to balance.

Ingredients

  • 100 g Butter (cold, cubed)
  • 100 ml Double cream (min 30% fat)
  • 50 ml Dry white wine
  • 1 head Shallot (or red onion)
  • 1 bunch Fresh dill
  • 1 tbsp Lemon juice