(a) The official symbol to be used to identify product meeting the USDA standard for ice cream shall be as follows:

(b) Ice cream manufacturing plants using this symbol shall be USDA approved as set forth in subpart B of this regulation, and the ice cream bearing the symbol shall be manufactured under continuous resident or continuous nonresident USDA inspection service in accordance with subpart A of this regulation. The dairy ingredients used in such ice cream shall come from USDA approved plants.