Agar Agar Powder – What It Is, How to Use It and Where to Find It

Agar agar is a natural thickener derived from red seaweed, widely used in vegan cooking and preparations requiring an alternative to animal gelatine. This guide covers the properties, benefits, uses and common questions about non-irradiated agar agar powder of European origin.

What Is Agar Agar?

Agar agar is a gelatinous substance derived from red seaweed, free from flavour, colour and gluten. High-quality agar agar should be off-white, preferably European in origin, and neither irradiated nor chemically bleached (processes prohibited in the European Union).

Nutritional Properties and Benefits

Agar agar can form gels at room temperature: dissolve it in a liquid, heat the mixture to 95°C and cool it. At room temperature, agar agar gels. This gel can be reheated to approximately 55°C, allowing warm jellies to be served. Suitable for vegan and vegetarian diets.

One tablespoon of agar agar corresponds to approximately eight gelatine sheets (each weighing about 5g).

What Is Agar Agar Used For?

Agar agar is a natural plant-based thickener derived from a polysaccharide extracted from certain red seaweeds through processing and drying. Calorie-free and without altering food flavour, it is absorbed by the body only to a very limited extent. One of its main properties is thermoreversibility: gels can be melted and reset, providing culinary flexibility without losing texture.

Interesting Facts About Agar Agar!

Agar agar is a versatile plant-based gelling agent obtained from red seaweed, known for its culinary applications, especially vegan and vegetarian recipes. It leaves food flavour unchanged and creates firm textures with very little product. Known as "kanten" in Japan, where it has been used for centuries, it reached Europe in 1859 and is now used worldwide. Agar agar is thermoreversible, so it can be melted and gelled repeatedly. As an alternative to animal gelatine, it allows puddings, aspics and original desserts such as Raindrop Cake, a transparent sweet resembling a water droplet; find the recipe here. Sold as a powder, it is typically used at 4–5 grams per litre of liquid for a stable, transparent consistency. It is also calorie-free and only minimally absorbed by the body, making it suitable for anyone seeking light, natural ingredients for creative cooking.