"Cook" is not a commonly used phrase so I'm not sure what you mean by that. Usually wax is melted in a melt pot and then poured into a pouring pot after it reaches the temp you desire, say 175*. Then you add your fo to the pour pot at the temp you want, say 170*, and gently stir the fo in, gently so you don't add air bubbles. Add dye if using, and pour at desired temp. For 464 I've found pouring @ 120 does good. If you get a discoloring occurance, it probably is what we call frosting. And frosting is something that is an ongoing battle, altho commonly accepted as a "soy thing". Hope that helps.