What kind of ingredient this is
potato protein sits in the starchy tuber family. Tubers (potato, sweet potato) provide digestible non-grain starch. Sniff treats them neutrally outside of high-concentration grain-free formulations.
Where potato protein sits in the Sniff System
potato protein carries a caution flag in the Sniff System. The methodology does not categorically reject it, but does penalize products where it appears in problematic concentrations, problematic combinations, or without offsetting positive ingredients.
Every methodology choice is published, citeable, and subject to revision when new evidence arrives. Read the full Sniff methodology for the formulas behind every score component, or file a correction if you think this position is wrong.
Similar ingredients in the catalog
Sniff's semantic graph clusters these ingredients near potato protein by formulation profile. Each links to its own ingredient page.