1.** Offline coffee shop * *: You can go to the local coffee shop to buy black coffee. It should be noted that some coffee shops may not provide pure black coffee, so you need to ask in advance.

2.** Supermarket * *: Many supermarkets sell black coffee powder or coffee beans. For example, Nestle alcohol instant American black coffee powder, freshly squeezed Italian concentrated freeze-dried instant black coffee and so on.

3.** Online shopping platform * *: There are many different brands and types of pure black coffee to choose from on the online shopping platform like JD.COM, such as G7 Zhongyuan American instant black coffee 0 sucrose 0 fat-burning and fat-reducing card fitness 30g*3 boxes (45 cups can be brewed).

When buying black coffee, it is recommended to pay attention to the brand, type, composition, calorie and caffeine content of the product, so as to choose black coffee that suits your taste and needs.