Two years unopened. Four days chilled once opened.
On the palate
Forest floor, deep sweetness from the madeira, silk from the final butter.
Where this dish comes from
Mushroom preservation is ancient and almost always by drying — the Romans dried boletus, and the trade in dried porcini across the Alps is documented from the medieval period. Wet-preserving them in a cooked ragù is a much later, richer idea, born in the Piedmontese and Emilian kitchens where autumn abundance had to be carried into winter.
The duxelles — finely chopped mushrooms cooked down hard with shallot — is credited to La Varenne in the seventeenth century, cook to the Marquis d'Uxelles. Every mushroom ragù since, including this one, is a descendant.
Massimo Bottura, Gualtiero Marchesi and the Piedmontese tradition around Alba all treat mushroom reduction as a foundation stock. In Britain the technique was made famous again by Simon Hopkinson at Bibendum and by the game-season cooking at The Ledbury.
How we make it
Dry sautéing first is non-negotiable. Mushrooms are about ninety percent water; put them straight into fat and they poach in their own liquid and never brown.
The madeira goes in twice, reduced to a glaze each time. One large addition tastes of alcohol; two small ones build a layered sweetness that survives five hours of simmering.
Dry sauté, then long simmer
5 hours
01Mushrooms are dry-sautéed first so they give up water before they meet fat.
02Deglazed with madeira, reduced to a glaze, twice.
03Simmered five hours with thyme, shallot and a spoon of mushroom stock.
04Finished with butter off the heat before jarring.
Over wide pasta or soft polenta, with a hard cheese grated at the table.
THE INGREDIENT LEDGER
Every defining ingredient, named: who grew or caught it, where, when it was taken, what it has meant to the people who kept it, and what it does for you.
Wild porcini & chanterelle
Autumn flush, October 2025
Farm / fishery
Two licensed foragers working the same permits for a decade
Region
Cascade foothills, Oregon
History
Foraged mushrooms are the oldest luxury of all — gathered, dried and hung by every forest people from the Alps to the Urals.
Why it is good for you
A rare non-animal source of vitamin D when sun-dried, plus beta-glucans that support immune function.
Nutrition, roughly
Per 100 g fresh: 22 kcal · 3 g protein · 2 g fibre · selenium, copper, B vitamins.
Cultured butter & thyme
Butter churned weekly · thyme cut through autumn 2025
Farm / fishery
Small creamery; thyme from the atelier garden
Region
Sonoma County, California
History
Mushrooms cooked in butter with thyme is a French forest-kitchen formula older than written recipes.
Why it is good for you
Thyme's thymol is antimicrobial; butter carries the fat-soluble vitamins the mushrooms need to be absorbed.
Nutrition, roughly
Per tablespoon butter: 102 kcal · 12 g fat.
Nutrition figures are typical values for the ingredient itself and are given as a guide, not as a dietary claim. Harvest dates refer to the batch printed on your lid.
