What is "patching" prayer in detail, and what is the Islamic ruling on eating "cachet"?

We have no knowledge of the cashier substance in question. The basic principle concerning foods is that they are permissible, and nothing is forbidden among them except what is harmful, intoxicating, or contains impurity; based on the Almighty's saying: "It is He who created for you all of that which is on the earth." Thus, every pure food that contains no harm is permissible.