Tournedos Soubise

Tournedos Soubise (grilled beef fillets with onion purée) teaches one true thing: tenderloin has tenderness but almost no margin. Grill it hot and quick, and the outside bronzes while the centre stays rosy; hesitate over weak heat, and this lean cut dries before it colours.

The original entry is brigade shorthand. It assumes butcher-cut tournedos, a grill kept fiercely hot, a saucier tending a pale Soubise, and stock never off the fire. Your honest equivalents are four evenly cut fillets, a large cast-iron grill pan, measured unsalted stock, a small saucepan, and a blender followed by a fine sieve. A dedicated saucier and a vast batch of purée are scaffolding, so they go. The crown arrangement, the pale onion flavour, and the separate service must stay. No salamander belongs here because nothing is gratinéed. One cook, one stove, one evening.

Dry the tournedos thoroughly and heat the grill pan until contact produces an immediate, determined hiss. That first meeting between meat and iron decides the dish, so have the Soubise finished and the platter warm before you begin.