Tomato Concassé

Tomate concassée is listed in Escoffier's guides as standard mise en place. The name comes from the French concasser, meaning to crush or break up. The technique exists because fresh whole tomatoes carry too much water (seeds and surrounding gel), too much bitterness (in the seed gel specifically), and a skin that detaches unappetisingly from the flesh during cooking. Concassé removes all three sources of disruption in a single preparation sequence.

The three-stage preparation of fresh tomatoes — blanching to remove the skin, seeding to remove excess liquid and bitter seed gel, then dicing to a precise, regular size. Concassé is not merely a cut; it is a transformation. A whole tomato carries water, bitterness, and structural unevenness that concassé eliminates. What remains is clean, dense, flavour-concentrated tomato flesh — ready for sauces, garnishes, or as a finished element that maintains its integrity on the plate.

Removing seeds and skin is an act of deliberate flavour concentration. The seeds' surrounding gel contains the highest citric acid concentration in the fruit (bitterness and wateriness); the skin contributes a slight bitterness and a chewy texture that detracts from refined preparations. Removing both produces flesh that is sweeter, denser, and more clearly flavoured. As Segnit notes, tomato's glutamate content — making it a natural umami source — is highest in the flesh closest to the seed cavity; this is why seeding must be done precisely and not wastefully, preserving the inner wall of flesh that carries the most glutamate-rich material. Tomato concassé with basil and olive oil works through multiple mechanisms simultaneously: the basil's linalool and eugenol compounds are fat-soluble and bond with olive oil; the tomato's water-soluble acids provide counterpoint; and the combination produces a flavour larger than its components because fat carries and extends the aromatic compounds across the full tasting experience.