K-gelatin is gelatin made from kosher sources. Most kosher gelatin is made from either fish or seaweed.
Agar powder Is gelatin extracted from seaweed
Agar comes from algae. It is used to culture bacteria and can be eaten by humans as a substitute for gelatin.
You can use any other brand of gelatin. There are other setting agents too, such as Quick Jel, which contains carragheenans (extracted from seaweed).
Agar is derived from seaweed and is often used in Japanese desserts
E407 is carrageenan - a thickener obtained from seaweed.
A gel with high viscosity is obtained.
The leafy part of a seaweed is called the blade.
Tang is German for seaweed.
gelatin eggs?
Most fruit gums don't contain any gelatin at all but rather use pectin. If gelatin is used, the majority of kosher gelatin is either fish or seaweed based.
Gelatine is an animal derived setting agent - it's clear and practically tasteless. It's obtained by boiling the animal carcases, once all the meat has been removed, then straining the water to obtain the gelatine. Beef gelatine is from cows (sometimes called bovine gelatine). Gelatine comes in a powder form, or as a clear sheet (or 'leaf'). It dissolves in water, enabling substances to 'set', like jellies. A vegetarian alternative is agar gel, sometimes called "agar agar" gel. It's derived from seaweed and has a higher melting temperature (so you can serve a jelly with a warm sauce without the jelly melting).