Décuire

Décuire (literally 'to un-cook') is the technique of stopping or reversing the progress of a sugar cook by incorporating a small quantity of liquid—usually hot water, cream, or butter—directly into the boiling mass. Because sugar solutions become increasingly concentrated and viscous as water evaporates, adding liquid dilutes the sucrose content, lowers the temperature abruptly, and re-introduces free water molecules that coat sucrose crystals and discourage lattice formation. The technique is used in several distinct situations: (1) to rescue an over-cooked sugar that has gone past its target stage, (2) to deliberately produce a flowing caramel sauce from a dry or wet caramel by adding cream off the heat, (3) to keep a poured fondant or pulled sugar pliable while working with it, and (4) to transition a toffee or butterscotch to a softer, more spreadable body. The key physical principle is that the liquid must be added carefully and in small amounts—too much added at once causes explosive spattering as steam flashes from the hot pan. In professional pâtisserie, the term is also applied more loosely to any dilution step in a sugar preparation, including the addition of glucose syrup or invert sugar, which serve as interfering agents rather than simple diluents.

“Once the caramel reached a deep amber, she pulled the pan from the heat and décuired it with warm cream, whisking steadily until the sauce was glossy and pourable.”

• TechniqueCaramelization
• ConceptSugar Stages
• TechniqueTempering Chocolate

1. 1.Professional Pastry Chef — Bo Friberg (4th ed.)
2. 2.The Art of the Chocolatier — Ewald Notter
3. 3.Sucre d'Art — Stéphane Glacier
4. 4.On Food and Cooking — Harold McGee

Confidence: high