Weigh 16 ounces of either white or dark chocolate. For a half and half batch, weigh out 8 ounces of white and 8 ounces of dark chocolate. Microwave the chocolate for 2 minutes at 50% power. After you melt the chocolate, stir it with a spoon until it is soft and creamy. Then pour onto the Rocha and spread until smooth, or you could draw a smiley face or spell "Happy Birthday" if you are making the Rocha for a special occasion.