Substitute for Agar Agar: 5 Best Alternatives for Gelling & Setting
Best Substitute
Gelatin
1 tbsp gelatin powder per 1 tsp agar agar powder
The most common substitute. Gelatin sets softer and gives a melt-in-your-mouth texture compared to agar's firmer set. Must bloom in cold liquid before dissolving in warm liquid.
Flavor & Texture Change
Produces a softer, more jiggly texture that melts in the mouth. Gelatin desserts have a smoother mouthfeel than agar-set ones.
When Not to Use
Not vegan or vegetarian (made from animal collagen). Must be refrigerated to set and melts at warm temperatures. Does not work with fresh pineapple, kiwi, papaya, or mango (enzymes prevent setting).
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Which Agar Agar Substitute Should You Use?
Best Overall
Gelatin
Most reliable substitute with softer, melt-in-mouth texture. Use 3x the amount.
Best Vegan
Carrageenan
Seaweed-derived like agar. Works 1:1 with similar gelling properties.
Best for Jams
Pectin
Natural fruit-based gelling agent. Works best with sugar and acid.
All Alternatives
Carrageenan
1 tsp carrageenan per 1 tsp agar agar powder
Another seaweed-derived gelling agent. Available in kappa (firm gel), iota (soft, elastic gel), and lambda (thickener, no gel) forms. Choose based on desired texture.
Flavor/texture:Neutral flavor. Kappa carrageenan produces a slightly more brittle gel than agar. Iota carrageenan gives a softer, creamier set.
Avoid when:Different types produce very different textures. Kappa carrageenan sets firmly like agar. Iota is softer and more elastic. Requires careful temperature control to activate properly.
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Pectin
Start with 1 tsp pectin per 1 tsp agar agar, adjust to desired firmness
A natural plant-based gelling agent found in fruit cell walls. Works best in fruit-based recipes and jams. Requires sugar and acid to gel properly.
Flavor/texture:Produces a softer, more spreadable gel than agar. Best in fruit-based recipes where its natural fruit affinity enhances the result.
Avoid when:Requires sugar and acid (citric acid or lemon juice) to gel. Does not work well in low-sugar or savory applications. Results vary by brand and type (liquid vs powder). Not a direct swap for all agar uses.
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Cornstarch
1 tbsp cornstarch per 1 tsp agar agar powder
Thickens rather than gels. Mix with cold liquid to make a slurry, then stir into hot liquid. Best for thickening sauces, puddings, and pie fillings rather than making firm gels.
Flavor/texture:Neutral flavor. Creates a thicker, creamier consistency rather than a firm gel. Good for custard-style desserts but not for clear jellies.
Avoid when:Does not create a firm gel like agar. Only thickens. Not suitable for jellies, gummies, or anything that needs to hold a shape. Becomes cloudy rather than clear.
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Vegan Jel (commercial)
Follow package directions (typically 1:1 with agar agar)
Commercial vegan gelatin alternatives like Simply Delish or Bakol. Plant-based, dissolve easily in water without heating, and come in multiple flavors.
Flavor/texture:Flavored versions add their own taste. Unflavored versions are neutral. Texture is generally softer and more jiggly than agar.
Avoid when:Brand-dependent results. May contain added sugars or flavors. More expensive than agar agar. Not always available in stores.
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Tips
Agar agar must be boiled for 2-3 minutes to activate, unlike gelatin which only needs warm water. It sets at room temperature and creates a firmer gel than gelatin. When converting recipes, start with less agar than you think you need and increase gradually. Highly acidic fruits may weaken the gel.
How to Substitute Agar Agar
A plant-based gelling agent derived from red algae seaweed. Used as a vegan alternative to gelatin in jellies, puddings, custards, and mousses. Sets firmer than gelatin and remains stable at room temperature.
The best substitute for agar agar depends on what role it plays in your recipe. Our top recommendation is Gelatin (1 tbsp gelatin powder per 1 tsp agar agar powder), which works well for panna cotta, mousse, jelly, marshmallows.
If you need a different option, Carrageenan (1 tsp carrageenan per 1 tsp agar agar powder) is another reliable choice. Another seaweed-derived gelling agent. Available in kappa (firm gel), iota (soft, elastic gel), and lambda (thickener, no gel) forms. Choose based on desired texture.
When substituting agar agar, consider the flavor profile, texture, and cooking method of your recipe. For vegan alternatives, look for the options marked with the vegan badge above.
Substitution ratios verified against USDA FoodData Central. See our testing methodology for details.
Sources & References
- USDA FoodData Central
agar agar and gelatin nutritional composition data
Frequently Asked Questions
Can I use gelatin instead of agar agar?
Yes. Use 1 tablespoon of gelatin powder per 1 teaspoon of agar agar powder. Gelatin sets softer and must be refrigerated, while agar sets firm at room temperature. Gelatin is not vegan.
What is a vegan substitute for agar agar?
Carrageenan is the best vegan agar agar substitute at a 1:1 ratio. It is also derived from seaweed. Pectin works for fruit-based recipes like jams and jellies.
Can I use cornstarch instead of agar agar?
Cornstarch thickens but does not gel. Use 1 tablespoon cornstarch per 1 teaspoon agar agar for puddings, pie fillings, and sauces. It will not create firm jellies or gummies.