Bugged recipe involving adding a "sweet"

[elentari 2668]

So i'm trying to make a complex cooking recipe in a cake tin and it says "Have you tried adding a sweet?". I get a sweet and drop it in the cake tin "[20:56:26] You drop a sweet.". Then it says "[20:56:27] The items inside do not make any known recipe." . The sweet i'm dropping is a green apple nougat for reference. Is it an improper ID given to the item or what?