Espresso’s Caffeine Interplays with Milk Proteins Unveiled | Mirage NewsPouring milk into coffee causes the proteins to interact (e.g., combine or repel) with compounds extracted from the roasted, ground coffee beans, and ...2024.06.07 Pouring milk into coffee causes the proteins to interact (e.g., combine or repel) with compounds extracted from the roasted, ground coffee beans, and ...