TECHNIQUE KNOWLEDGE
Blanching and Shocking
Blanching briefly cooks food in boiling water or steam; shocking rapidly cools it to stop further cooking and preserve the desired texture.
Why It Works
Brief high heat softens fibres, sets colour, loosens skins, or begins cooking. Rapid cooling removes residual heat before the ingredient overshoots.
Method
- Prepare a large pot of boiling seasoned water and an ice-water bath when shocking is required.
- Add food in batches that do not kill the boil.
- Cook only to the target stage.
- Transfer immediately to ice water.
- Drain and dry thoroughly before storage or finishing.
Good Cues
Vegetables remain vivid, crisp-tender, and cool through the centre after shocking.
Common Mistakes
- Using too little boiling water.
- Leaving food in ice water long after it is cold.
- Failing to dry before sautéing.
- Blanching so far that the finishing cook overcooks the food.
Professional Application
Used for green vegetables, tomato and fruit peeling, parcooking potatoes, noodles, herbs, buffet mise en place, and high-volume service preparation.
Chef’s Notes
Blanch to the stage needed for the next step, not necessarily to final doneness. Service finishing still adds heat.
Related Techniques
Boiling, steaming, sautéing, cooling food safely, and reheating.