What percentage of milk is made up of lactose?

Milk typically contains about 4-5% lactose, which is a natural sugar present in the milk. This percentage can vary slightly depending on factors such as the type of milk, the animal species it comes from, and its processing.

In cow's milk, for instance, lactose concentration generally falls within this range, making it a key component of milk alongside fats, proteins, and minerals. Understanding the composition of milk is essential in culinary practices, particularly in baking and preparing dairy-based dishes, as it affects the flavor, texture, and fermentation processes involved.

The other percentages listed do not accurately represent the lactose concentration in milk. Values that are significantly higher than this range would be atypical and not reflective of standard milk composition.