starch based filler

Today I received my Muji drawers in this starch based, compostable filler instead of styrofoam. Yay, less guilt from ordering something that needed padding. Included was an insert about it - "it's non toxic, static free, and when exposed to hot water, the material disperses readily, and may be rinsed down the drain only if local regulations permit." They looked cheese puffs and because it's made of starch, they smelled like it too. Almost felt like taking a nibble...