Which of the following is NOT one of the four essential parts of stock?

• A. Salt
• B. A major flavoring ingredient (bones, mirepoix)
• C. A liquid, most often water
• D. Mirepoix

Answer: (B)

Stock is built from four separate elements: a liquid base, a major flavoring ingredient, aromatics, and seasoning. The major flavoring ingredient and the aromatics are used as distinct parts (for example, bones as the flavoring ingredient and mirepoix as the aromatics). A choice that combines bones and mirepoix into one item treats them as a single component, which isn’t one of the four distinct parts used to construct stock. That’s why this option is the one that isn’t an essential part. The other choices fit the four categories: a liquid base (water), mirepoix as the aromatics, and salt as the seasoning.