don't forget that making a "what did you do?" result makes the food obviously inedible to all senses.

Therefore, you'd need a glamor effect strong enough to disguise its appearance, texture, smell, taste, and sound (best not to think about that last one). Even then, though, you'd need an enormous bluff check to convince the target that they have to force down that food for some reason.

Also, it makes complete sense that cooking golems break reality, what do you think happens to the remnants of their animating magic?