Nap

Nappé (also written nappe) describes a sauce or custard that is thick enough to coat the back of a spoon in an even layer. The related French verb napper means to coat or cover food with sauce. The term is used in classical sauce-making and pastry, especially for preparations such as crème anglaise.

How to recognize nappé consistency

Dip a clean spoon into the sauce and lift it out. The sauce should coat the back in a thin, even film. Draw a finger across the coating; if the line remains visible and does not immediately run together, the sauce has reached a nappé consistency. This is a practical test, not a precise viscosity measurement.

Common applications

• Crème anglaise: cooked gently until it coats the spoon without becoming scrambled.
• Velouté and other sauces: reduced or thickened until they coat food evenly.
• Pastry preparations: certain creams and custards are assessed by their ability to coat a spoon.

Nappé versus thick or set

A nappé sauce remains fluid enough to pour or coat food. A thickened preparation may be heavier, while a set custard or gel holds a defined shape. The term describes a coating consistency, not a fully set texture.

Chef’s tip: Check the consistency at the temperature at which the sauce will be served. A sauce may thicken as it cools, so stop cooking at the correct point for the intended service.

Key distinction: Nappé means a sauce coats the back of a spoon; it is not simply a synonym for thick, creamy or reduced.