Mochi is a weird sticky substance that forms globs. It is very sticky and messy. In real life, mochi is a popular Japanese snack made from steaming mashed rice.
In Levels, it will stick to the user making it lose control or allowing it to fly, or it will swallow the user whole. Mochi can be used as glue or a trap. When mixed with another element, it can make objects sticky or harder to break apart. Mochi can make Brittle pretend to self-heal cracks. Mochi + Inflow makes one of the most powerful explosives in the game.
The individual particles stick to and react violently with Liquid Jet, creating many high-energy compound particles.