Kanten is translated as AgarAgar-- but it comes in a solid format (not powdered). This is great as a substitute for gelatin because you can use for a large amount to make a 'solid', not just as a thickening ingredient.

What are you using it for? Typically, gelatin can be substituted, but not, of course, if you are feeding vegetarians. Here is a link to more information about substitutions for gelling and/or thickening ingredients: http://www.foodsubs.com/ThickenGelatins.html ;o)