I actually love Tiramisu, it is an acquired taste, but basically is strong coffee. With the chemical reactions happening with the plastics, it is just chemistry. If you poured water in a cup made of pressed hardened sugar it would melt in a heartbeat, so just because it disintegrates does not mean it is like corrosive acid
Some chemicals react to other chemicals. If you put a chicken bone in vinegar it will in time turn it to a rubbery substance, not bone. Just chemistry LOL bnrk