You know, chances are that's baking chocolate forgotten on the shelf in a grocery store.
"Forgotten" confectionary chocolate usually disappears into somebody's stomach. 🤔 Actually, would foodstuff even wash up to Gensōkyō in the first place? I know there's soda, but they're bottled. Most "forgotten" foodstuff wouldn't be as securely packaged, meaning other animals (or natural rot) will have gotten to them eventually.
Oh yeah, cans. 🥫 Jars. Barrels. And maybe even MREs.
