Nordic Laverbread Beurre Blanc

Name: Nordic Laverbread Beurre Blanc
Prep time: 10 min
Cook time: 15 min
Total time: 25 min
Yield: about 1¾ cups (400 ml)
Cuisine: French Classic
Ingredients: 1 shallot, finely diced Shallot; 100 ml dry white wine White Wine; 50 ml dry cider White Wine; 2 tbsp double cream (30 ml) Double Cream; 150 g cold salted butter, diced Butter; 2 tbsp laverbread (Welsh seaweed purée) (30 ml) Seaweed; ½ lemon juice (15 ml) Lemon Juice; salt (2 g) Salt; pepper (0.5 g) Pepper

Independent adaptation of a publicly published Tomos Parry recipe. Not affiliated with, sponsored by, or endorsed by Tomos Parry.

From a starred kitchen.

Ratio

White Wine 100 mlWhite Wine 50 mlDouble Cream 30 mlButter 165 mlSeaweed 30 mlLemon Juice 15 ml

Ingredients

Shallot — 1 shallot, finely diced
White Wine — 100 ml dry white wine
White Wine — 50 ml dry cider
Double Cream — 2 tbsp double cream (30 ml)
Butter — 150 g cold salted butter, diced
Seaweed — 2 tbsp laverbread (Welsh seaweed purée) (30 ml)
Lemon Juice — ½ lemon juice (15 ml)
Salt — salt (2 g)
Pepper — pepper (0.5 g)

Method

This sauce is cooked on the stove — the jar is for storing it, not making it.
Cook ingredients gently according to the published technique, adapted here as pantry quantities only.
Finish off heat; adjust seasoning.

Companion jar

Nordic Laverbread Beurre Blanc wants a whisk and a stove — make it from this page.

The jar carries pour-and-shake sauces. These are its closest cousins from kitchens like this one:

4 kitchens · 7 stars · 4 national awards

Uptown Honey-Mustard★ STARRED KITCHEN
Napa Anchovy★★★ KITCHEN
Provençal MayoNATIONAL AWARD WINNER
Midtown Buttermilk★★★ KITCHEN

Build the companion jar

First run is small.

Leave an email and we’ll hold a jar with its companions on it.

Provenance

Tomos Parry. British / fire-cooking. Cited awards include: Michelin (Mountain / Brat, London); World's 50 Best #74 (2025).

Originally published as Laverbread Beurre Blanc.

Adapted from a Tomos Parry recipe (Tomos Parry / Observer (venison salad, leeks, laverbread)).

FAQ

Can this go in a shake jar?

No — this one needs a blender or stove, so make it from this page. Jars only carry pour-and-shake sauces — its companion jar is below.

What do the quantities mean?

Amounts follow the published recipe in household units (with metric in parentheses). On a jar, every sauce scales to the same fill height.

Where did this recipe come from?

Adapted from Tomos Parry / Observer (venison salad, leeks, laverbread) (published as “Laverbread Beurre Blanc”). Full citation lives in Provenance.

Companion jar