(au bleu) trout (a preferred method of cooking trout, not live, as often assumed, but rather in a live condition. The trout is gutted just moments prior to cooking, but neither washed nor scaled. It is then plunged into a hot mixture of vinegar and water, and the slimy lubricant that protects the skin of the fish appears to turn the trou... Found on http://www.patriciawells.com/glossary/