A Recipe

1. (medicine, archaic) A formula for preparing or using a medicine; a prescription; also, a medicine prepared from such instructions. [from 16th c.]
2. Any set of instructions for preparing a mixture of ingredients. [from 17th c.]
3. By extension, a plan or procedure to obtain a given end result; a prescription. [from 17th c.]
4. Now especially, a set of instructions for making or preparing food dishes. [from 18th c.]
5. A set of conditions and parameters of an industrial process to obtain a given result