Sauteed Sturgeon with Vermouth Dill Sauce

Sturgeon is the steak of the sea, meaty and firm with enough density to hold up to a proper sauté without flaking apart. A quick two-minute sear on each side in butter is all this fish needs, which means the star of the show is really the sauce.

The vermouth and dill reduction is classic French saucier territory, built in stages. Shallots soften in butter, vermouth reduces down to just a tablespoon, fish stock reduces again, and cream goes in before cold butter gets whisked in at the end to emulsify the whole thing into a glossy, luxurious pan sauce. Each reduction concentrates flavor, so no shortcuts.

Keep the sauce warm but never let it boil once the butter emulsion is in, or it will break. Low and steady is the way.

Pro Tips

• Pat the sturgeon completely dry before it hits the pan. Wet fish steams instead of browning.
• Whisk the final butter in off the heat, a piece at a time. This is mounting butter, the technique that gives the sauce its silky body.
• Use dry vermouth, not sweet. Sweet vermouth throws the whole sauce off balance.
• If the sauce breaks, pull it off the heat, whisk in a tablespoon of cold cream, and it usually comes back together.

Variations

• Swap sturgeon for halibut or swordfish. Both are firm enough to handle the same treatment.
• Use tarragon in place of dill for a more anise-forward sauce.
• Finish with a squeeze of lemon just before serving for a sharper lift.