Given standard home kitchen equipment and techniques, could you prepare this item? Yes -> not UPF; No, requires a factory -> UPF.

This is kind of like the Jeff Foxworthy jokes.

If you remove so many of the nutrients that you have to try to spray vitamins back on... you might make a UPF.

If your product has ingredients where there is no evidence that those ingredients can actually be digested by the human body... you might make a UPF.

If you have to add dyes so your product doesn't look like sawdust or poop, you might make a UPF.

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