Three classical petit four preparations — thin, crisp cookies used as garnishes, accompaniments, and dessert plate components. Navettes (boats): boat-shaped crisp almond cookies. Tuiles (tiles): thin, curved almond wafers shaped while warm over a rolling pin. Langue de chat (cat's tongue): thin, buttery finger biscuits piped through a plain tip. All three share the philosophy of the thin biscuit: maximum surface area for Maillard browning per unit of dough, producing a flavour intensity out of proportion to their size.
**Tuiles d'amandes:** - Butter + icing sugar + flour + egg whites + flaked almonds. - Spread very thin on a silicone mat — 2mm maximum. - Bake at 180°C for 8–10 minutes until even gold throughout. - Remove immediately from the oven while still pliable — 15 seconds window. - Drape over a rolling pin or inside a ramekin to set in the curved shape. **The 15-second window:** Tuile that sets on the flat baking sheet becomes a flat biscuit. Tuile shaped within 15 seconds of leaving the oven holds the curve. After 20 seconds: it is too stiff to shape and any attempt to curve it will crack it. This is the tuile's entire challenge. Sensory tests: **Feel — the pliability window:** Lift the tuile from the baking mat immediately from the oven. It should flex without cracking — like warm plastic. Shape immediately. The transition from pliable to brittle as it cools takes approximately 15 seconds.
Jacques Pépin's Complete Techniques