---
kind: "section"
citation: "7 C.F.R. § 58.641"
title: "7"
number: "58.641"
heading: "Hardening and storage."
url: "https://uscodex.org/cfr/7/58.641"
---

# §58.641. Hardening and storage.


Immediately after the semifrozen product is placed in its intended container it shall be placed in a hardening tunnel or hardening room to continue the freezing process. Rapid freezing to 0° to −15 °F is desirable to produce a good textured product.


## Notes

### Source

Source: 40 FR 47911, Oct. 10, 1975, unless otherwise noted. Redesignated at 42 FR 32514, June 27, 1977, and further redesignated at 46 FR 63203, Dec. 31, 1981.

### Authority

Authority: 7 U.S.C. 1621-1627.

### Source

Source: 23 FR 9410, Dec. 5, 1958, unless otherwise noted. Redesignated at 42 FR 32514, June 27, 1977, and further redesignated at 46 FR 63203, Dec. 31, 1981.