How to Nage au Verjus

What You Need to Know

Verjus (from French 'vert jus' meaning green juice) is the pressed juice of unripe grapes, primarily Vitis vinifera cultivars. Its acidity comes from malic (3–5% w/v) and tartaric acids (1–2% w/v), with pH 2.8–3.2. Unlike vinegar, verjus contains residual sugars (5–8% Brix) and phenolic compounds from grape skins.

Used as a deglazing liquid for pan sauces or added to court-bouillon for poaching fish. Provides brighter acidity than wine without alcohol's cooking constraints. Modern chefs use it in vinaigrettes where vinegar would overpower delicate ingredients.

Key Parameters

Steps

1. 1.

   undefined

2. 2.

   undefined

3. 3.

   undefined

The Science

Primary Reaction

Tartaric acid crystallization

Common Mistakes