Skeleton's Gelatin.
skeleton gelatin
milk
it solidfy by the temperature
Yes, the dessert Gelatin is a type of colloid. It is a colloid because it can be easily made by adding powder to water so that it congeals.
The mixture is homogeneous.
See: Gelatin Dessert
Pigs trotter is boiled and put into gelatin
bananas, canned fruit
Neither - it a colloid of a liquid in a solid.
Yes, gelatin is a colloid.
Jello is a flavored gelatin dessert. There are also recipes that use Jello to make molded gelatin salads (but these have mostly fallen out of use since the 1960s, except for molded gelatin fruit salads). Gelatin is the main ingredient in Jello, and the reason it sets up.