To learn coffee, we must first understand the historical reasons of the coffee trend of the three giants.

At first, it was the delicious three-in-one instant coffee, and then it changed to the fancy coffee represented by Starbucks. Now, more and more people are beginning to accept drinking black coffee without sugar and milk to taste the pure flavor of the beans themselves. The first wave of coffee arose from instant coffee, represented by Nestl é and Maxwell, which tasted delicious and fragrant.