Oleh Brenda, Proportions: These proportions are based on weight. For example, a 1:1 ratio means 4 ounces chocolate to 4 ounces cream. ◆Layer cake filling and thick glaze: 1:1, equal parts chocolate and cream. ◆Chocolate truffles: 2:1, two parts chocolate to one part cream. ◆Soft icing and pourable glaze: 1:2, one part chocolate to two parts cream.