Why start stock-making with cold water rather than hot water?

Why start stock-making with cold water rather than hot water?

• A. To gradually extract gelatin and achieve clarity
• B. To speed up extraction
• C. To prevent scum formation
• D. To kill bacteria

Answer: (A)

Starting with cold water sets up a gentle, controlled extraction of flavor, minerals, and gelatin from the bones and connective tissue. As the liquid warms, collagen slowly dissolves into gelatin, which gives body to the stock. This gradual release also allows impurities and proteins to coagulate and rise to the surface so you can skim them off, helping the stock stay clear. If you drop bones into hot water, proteins coagulate quickly at the surface, forming skim and trapping impurities, which makes the stock cloudier and can reduce the amount of gelatin that ultimately dissolves. So a cold start fosters both better gelatin extraction for body and a clearer, cleaner stock.

Starting with cold water sets up a gentle, controlled extraction of flavor, minerals, and gelatin from the bones and connective tissue. As the liquid warms, collagen slowly dissolves into gelatin, which gives body to the stock. This gradual release also allows impurities and proteins to coagulate and rise to the surface so you can skim them off, helping the stock stay clear. If you drop bones into hot water, proteins coagulate quickly at the surface, forming skim and trapping impurities, which makes the stock cloudier and can reduce the amount of gelatin that ultimately dissolves. So a cold start fosters both better gelatin extraction for body and a clearer, cleaner stock.