What is the purpose of steaming milk in coffee preparation?

Steaming milk is an essential technique in coffee preparation, particularly when making espresso-based drinks like lattes and cappuccinos. The primary purpose of steaming milk is to create microfoam, which is a velvety texture that enhances the overall drinking experience. Microfoam is produced when steam injects air into the milk, breaking it down into tiny bubbles, resulting in a creamy consistency that complements the espresso. This process not only adds a luxurious mouthfeel but also improves the ability to pour latte art.

While steaming milk can slightly change its flavor profile and may affect the acidity, the creation of microfoam is the key feature that distinguishes espresso drinks and adds to their enjoyment. Thus, the correct answer focuses on an important outcome of proper milk steaming, which enhances both the texture and visual appeal of the beverage.