Heavy cream is often used for frosting, while milk is more commonly used for other desserts. Milk contains less fat than whipped cream, so it is lighter in color and flavor. It's important to note that frosting will take a little longer to prepare if you use pasteurized, refrigerated, or frozen milk instead of room temperature milk. Whipped cream and heavy cream are both types of dairy products that are whipped to create a fluffy texture. However, they differ in the amount of fat they contain. Whipped cream has at least 30% but less than 36% fat, while heavy cream has at least 36% but less than 40% fat.