Frappes are great. Tey are easy, some taste great, and there is a good margin on them. You can do them in granita machines and there is a new one coming out end of this month which you can add flavours to individual cups. You just keep 1 as vanilla add can add a shot of coffee or a good flavoured syrup which is blended into the cups worth. If you send me an email I can pass on a contact.