AGAR AGAR POWDER Derived from red seaweed this natural thickener is mainly used as a gelling agent in desserts puddings and pie fillings. It is white and semi-translucent in appearance and acts as an alternative to gelatin. Not only Agar Agar is a very strong gelling agent but it o has no residual flavor or fragrance which makes it a perfect choice for making your favorite desserts and jellies.