To Make the Dough: Combine 12 ounces of the chocolate with the corn syrup in a small bowl. Stir to moisten the chocolate. For dark chocolate dough, melt in a barely simmering water bath over low heat. Stir frequently to hasten melting. Or microwave on medium (50%) for about 2½–3 minutes. For white chocolate dough, melt in a water bath which has first been brought