If it is a secret recipe, don't apply for a patent. Literally, "patent" refers to exclusive interests and rights. The word "patent" comes from Latin "Litterae patentes", which means open letters or open documents. It is a certificate used by medieval monarchs to issue certain privileges, and later refers to the exclusive right certificate signed by the British king himself. Patents are the largest source of technical information in the world. According to empirical statistical analysis, patents contain 90%-95% of the global scientific and technological information.
If your secret recipe is afraid of being cracked or counterfeited by others, you can apply for a patent, and the formula can generally apply for an invention patent. If you want to help. I can help you.