Harima Agar Agar can be used as a clarifying agent in brewing, and a thickening agent in ice cream, pastries, desserts, and salad dressings. Agar Agar is a gelatinous substance derived from red algae that have been popular across Asia for centuries. As it is derived from plants, it is used by vegans as a substitute for gelatin. Agar Agar gives a sensation of fullness, leading it to be used in some diet products. It sometimes is used as a digestive remedy for upset stomach. It can also be used as a laxative, or to thicken soups, sauces, or preservatives. Explore an entire range of Harima products and many more only on Big Basket!