Gellan Gum

This is the preferred hydrocolloid, since it produces gelled liquids with a very good flavor delivery, and they can be as clear as water (see the Sweet Lime Jelly). To hydrate, combine the gellan powder with a cold liquid, then whisk over high heat until the liquid is clear and the powder has dissolved. It won’t necessarily need to boil. High-acyl gellan sets at about 65°C/150°F, and low-acyl gellan sets at about 40°C/105°F. It is a thermo-reversible gel, if exposed to heat for a long period of time.