Once the gelatin is dissolved, the liquid is ready to be cooled. The efficient way to do this is to pour the gelatinized liquid into an ice bain-marie. Stir constantly so it cools evenly. (If you do not stir it, it will set along the surface of the bowl before the rest of the liquid sets.) Stir slowly and gently so as not to incorporate air bubbles, which would mar the smooth texture of the final product when it sets. While the gelatinized liquid is cooling, carefully watch its changing consistency.