After completing all the layers, refrigerate the gelatin overnight. To unmold, fill a larger container or clean sink with warm water (not too hot!). With clean fingers, loosen the gelatin around the edges of the mold cavities. Next, dip the mold almost to the edge into the warm water for just a few seconds (10 seconds worked for me). Dry the bottom of the mold with a towel and check the edges to see if they are loose. If not, repeat the dip for just a few seconds. Place your serving plate on top of the mold and invert.