Food and Agricultural Code section 38397

Buttermilk for drying shall be fresh, sweet and from the churning of sweet cream butter, with or without the addition of harmless lactic culture and unless cultured, shall be held at 45 degrees Fahrenheit or lower until processed. No neutralizing agent or chemical preservative may be added. The product shall be labeled “Extra Grade Dry Buttermilk.”

Source: Section 38397, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=FAC§ionNum=38397.­ (updated Jan. 1, 1969; accessed Jun. 30, 2025).

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Verified:
Jun. 30, 2025

§ 38397's source at ca​.gov