Tempering chocolate is the controlled heating, cooling and reheating of chocolate to encourage stable cocoa-butter crystals, particularly form V. Properly tempered chocolate sets with a glossy finish, a clean snap and good contraction from moulds. Poorly tempered chocolate may set dull, streaky or soft and can develop fat bloom.
Cocoa butter can crystallise in several forms. Tempering encourages a stable crystal structure that gives finished chocolate its characteristic shine, snap and setting behaviour. The temperature curve depends on whether the chocolate is dark, milk or white and on the product’s formulation.
As a general starting point, dark chocolate is often melted to approximately 45–50°C, cooled to around 27–28°C and brought back to a working temperature near 31–32°C. Milk and white chocolate usually require lower working temperatures. Exact curves vary by couverture brand, cocoa-butter content and manufacturer instructions.
Example: temper dark couverture using the seeding method, then test a small smear on parchment. It should begin setting evenly with a smooth finish and no streaks when conditions are suitable.
Melting turns solid chocolate into a liquid. Tempering controls the crystal structure as the chocolate cools and returns to working temperature.
Chef’s tip: keep water and steam away from chocolate, use a reliable thermometer and follow the manufacturer’s temperature curve. Even a small amount of water can cause chocolate to seize.
This term is one of hundreds covered in depth across OCS courses, learning paths, and 1-on-1 coaching with Chef Eric.
