Agar Agar Powder is an excellent vegetarian alternative to gelatin. It's useful as a gelling agent and thickener in a variety of food including jams, jellies, pudding, icings and even ice cream. The standard ratio for vegan jelled dessert is 1 cup fruit juice to 1 teaspoon agar powder. Bring to a boil, reduce heat and simmer, stirring often, for 5 minutes or untiil the agar powder has dissolved. Pour mixture into a bowl and chill for 4 to 5 hours or until set.