Which of the following is NOT a key ingredient in forming a lean dough?

• A. Flour
• B. Yeast
• C. Milk
• D. Salt

Answer: (C)

In the context of forming a lean dough, the correct answer indicates that milk is not a primary ingredient. Lean dough is typically characterized by its simplicity and basic ingredients, which fundamentally include flour, yeast, and salt. These components work together to create a structured dough that relies on the protein content of flour and the fermentation process facilitated by yeast.

Flour provides the necessary structure and gluten development, which are vital for the dough to rise and achieve the desired texture. Yeast is essential for fermentation, producing carbon dioxide that makes the dough rise. Salt not only enhances flavor but also strengthens gluten, acting as a vital element in controlling fermentation.

Milk, while it can add flavor, richness, and moisture to doughs, is not included in the composition of lean dough. Instead, it is typically associated with enriched doughs that contain additional ingredients like fats, sugars, and eggs to create a richer final product. Thus, in the context of lean dough, milk is indeed not a key ingredient.