What is the melting point of agar?

In this brief article, we will provide you with the answer to the question: “What is the melting point of agar?”, discuss where you can buy agar and the advantages and disadvantages of agar.

What is the melting point of agar?

The melting point of agar is at about 85 degrees Celsius (185º F). Agar must first hydrate, or absorb water, in order to function properly. To adequately hydrate agar, bring it to a boil at 212°F (100°C) and then simmer for 3 to 5 minutes.

Where can I get agar?

Agar has become a popular product due to its usage as a gelatin alternative in vegetarian diets. As a result, it is easy to find in typical supermarkets. However, traditional supermarkets and health food stores typically charge the highest costs for this product. 

There is now a global scarcity of the alga Gelidium corneum, which is needed in the manufacturing of agar. As a result, its cost might be rather expensive.

How should I use agar?

When working with agar, keep in mind that it must be brought to boiling temperature alongside the liquid into which it is meant to gel. At a lower temperature, gelatin can dissolve and be activated. This implies that gelatin powder can be activated simply by dissolving it in hot water. Agar is not one of them.

To make the agar ready for work, boil the mixture for at least half a minute – more if you have a bigger amount of liquid and agar. When you mix powdered agar with liquid, it seems to dissolve instantaneously. 

Do not be fooled if you do not see any indicators that it is still sandy. Agar dissolves considerably more easily and quickly than gelatin, but it must be properly prepared.

The agar-agar combination must be immediately added to another heated mixture. Both mixes must be hot in order for the agar to gelatinize properly. Your dessert will not gelatinize correctly if one of the pieces is cold.

Agar has the advantage of being able to be dissolved again for re-preparation if it is not prepared properly the first time.

You will need the following ingredients to make 1 cup (250 ml) of liquid:

  • 1 teaspoon (2 g) powdered agar – always placed in cold water, never in hot water, as it will agglutinate and become difficult to deal with.
  • Agar in stick shape Equals half a stick (4 g)
  • Agar strand = 12 strands (4 g) – must be soaked
  • 1 tablespoon agar flakes (4 g)

Use 250 ml of water for a hard texture. Use 300 ml if you want a soft texture, like tofu. Smaller quantities of agar can be tested in thicker liquids (such as fruit juice).

Keep in mind that very acidic components like lemons, strawberries, oranges, and other citrus fruits may necessitate more agar than called for in the recipe. 

Furthermore, enzymes found in fresh mangoes, papaya, and pineapple degrade agar’s gelling capacity, causing it to fail. Cooking these fruits before using them in a dish, on the other hand, neutralizes the enzymes and allows the agar to adapt.

What are the advantages and disadvantages of agar?

Agar is composed of 80% fiber, no fat, no protein, and barely a trace of carbs. Agar has just three calories per gram, or two teaspoons, because of its low carbohydrate content.

People use agar to reduce weight, particularly in Japan. Agar is known as “kanten” in Japan, and it is the major element in the “the kanten diet.”

Agar can accumulate in both intestines. This stimulates the intestines, resulting in a bowel movement. As a result, agar is widely used as a laxative. However, there is no scientific evidence to support its use as a laxative. 

In reality, agar can aggravate intestinal blockage, especially if it is not consumed with adequate water or other fluids. It is crucial to get medical advice before taking agar if you have an intestinal obstruction.

The agar’s collecting and bulking action also explain why it is used for weight reduction. Because agar makes people feel satiety, they may finish eating sooner than they would on a diet without agar. Some people believe that this reaction will cause them to lose weight. However, there is currently no valid scientific data to back up this weight loss idea.

If agar is not mixed with enough water or other liquid, it might expand and obstruct the esophagus. This is especially risky for people who have difficulty swallowing. If you have difficulty swallowing, get medical guidance before using agar.

There is the considerable worry that consuming agar, a form of dietary fiber, may raise the chance of developing colon cancers. If you have a history of or are at risk of colon cancer, get medical counsel before using agar.

Agar is a viscous gel. Some drugs can cling to agar in the stomach and intestines. Taking agar with oral drugs can reduce the quantity of medication absorbed by the body and, as a result, the treatment’s efficacy. To avoid this interaction, eat agar at least one hour after taking any oral drugs.


In this brief article, we provided you with the answer to the question: “What is the melting point of agar?”, discussed where you can buy agar and the advantages and disadvantages of agar.


Cozinha Técnica. “Ágar-Ágar”, 4 de outubro de 2018. https://www.cozinhatecnica.com/2018/10/agar-agar/.

“Kanten Diet – Metropolis Japan”. Acessado 14 de fevereiro de 2022. https://metropolisjapan.com/kanten-diet/.

Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.