Usable piece.

CFR · 2024-01-01 · US · Title 7

“Usable Piece” means that portion of the potato remaining after trimming, or as it occurs in the sample: (a) Not have any unusable material; (b) Unless otherwise specified, weigh at least 4 ounces; and, (c) Must have at least 50% of peel remaining after trimming.

official document · source cfr-2024 · id 7:§ 51.3411