S gelatine substitute derived from seaweed, and can be used in desserts, jellies, jams and custards. This magical sea vegetable derivative makes a superb jelly, and helps to set jams, cheesecake and the like. A great vegan alternative that has health benefits too, Agar Agar has similar health benefits to gelatine without the negative aspects. Health Connection Agar Agar Powder also has a gentle healing and cleansing effect on the digestive system. One level tablespoon will firmly set 1 litre of liquid.