CFR›Title 21›Chapter I›21 CFR Part 158 Citation21 CFR Part 158ContainsSubparts Subpart A–Subpart BCorpusDaily eCFRDisplayed edition2026-10-14Last updated2026-10-14 PART 158—FROZEN VEGETABLES Subparts Subpart A Subpart A—General Provisions Subpart B Subpart B—Requirements for Specific Standardized Frozen Vegetables Authority21 U.S.C. 321, 341, 343, 348, 371.