Mike's Fish Fumet

A fumet is the French term for fish stock, and it’s the quiet workhorse behind every great chowder, bisque, seafood risotto, and pan sauce. Unlike beef or chicken stock, it asks for almost no time: fish bones give up their flavor fast, so a 45-minute simmer is plenty. Push it longer and the stock turns bitter and cloudy.

The base is fish trimmings, the bones, heads, and frames most cooks toss out. Simmered with leeks, celery, carrots, parsley, bay, and thyme, they release a delicate, briny broth. A splash of tarragon vinegar is the move that sets this one apart, lending a faint anise brightness and helping draw the flavor from the bones.

Keep the simmer gentle and never let it boil hard, which clouds the stock and muddies the taste. Strain it through cheesecloth for a clear result, then use it right away or freeze it in batches. Having homemade fumet on hand turns a quick fish soup or chowder into something restaurant-worthy.

Pro Tips

• Use frames, heads, and trimmings from mild white fish or salmon. Skip oily fish like mackerel, which turn the stock greasy and strong.
• Never boil hard. A gentle simmer keeps the fumet clear; a rolling boil makes it cloudy and bitter.
• Don’t simmer past 45 minutes. Fish bones over-extract quickly and the flavor goes harsh.
• Skim any foam off the surface as it rises for the cleanest result.

Variations

• Add a generous splash of dry white wine to the pot for a more classic French fumet.
• Toss in a few peppercorns, fennel trimmings, or mushroom stems for extra depth.
• Freeze the strained fumet in ice cube trays for small splashes in sauces and risotto.