Gelatin is mostly fish glue and pig glue. Gelatin is made from fish spoon, that is, fish collagen, so it will be introduced that untreated gelatin will have a fishy smell.

If you do it yourself, the stench can be completely removed. First, soak the water on the surface of the fish bubble, cut into pieces, soak it in acid-containing solution for half an hour, such as white vinegar, and then rinse it with plenty of water. This step is mainly to remove trimethylamine (the taste of trimethylamine is commonly known as fishy smell), or it can be soaked in white wine.

Just steam the processed fish in water, and the boiled soup is a natural substitute for gelatin. The self-made fish glue will take a little longer to solidify, so it can be put in the refrigerator to shorten the time.