#plastisizer

No, isn't. Agaaaaain it's Chemistry.

Agar is starch base product. You know what, if you heat the starch base product the structure between one and others will break down (amilose) and plastisizer (in this case water) can enter the granule and granule start swelling. Water disappears to granule and the mixture become concentrate, chemist called it "Retrogradation" and it's not magic, hey.

Also it's happen to other starch products like maize, tapioca or potato. Well, Hidup Cireng!haha