When you get counterfeit electronics, you can usually tell right away. The packaging is off, misprinted, often has a Chinese name in small print on it somewhere. The product looks fine from a distance but up close, the mold alignment is off, it's too light, it feels cheap.
More often than not you roll your eyes and use it anyway, because most of the time it works well enough, for a while at least.
Branded food is a lot less likely to get a pass on any of those. We have a strong sense of what it's supposed to look like, smell like, taste like, feel like; we might put up with less from a clearly marked store-brand copy, but a name brand that doesn't taste like it should sets off alarm bells. And exactly reproducing a commercial food product is hard.
That's very much not true. I've received many fake items - where if I didn't already own the product AND box and could compare side by side, I'd never know.
Even then, until it doesn't work right, you wouldn't know.
There are some _very_ good looking counterfeits on amazon.
More often than not you roll your eyes and use it anyway, because most of the time it works well enough, for a while at least.
Branded food is a lot less likely to get a pass on any of those. We have a strong sense of what it's supposed to look like, smell like, taste like, feel like; we might put up with less from a clearly marked store-brand copy, but a name brand that doesn't taste like it should sets off alarm bells. And exactly reproducing a commercial food product is hard.