Black coffee and milk can be drunk together. The main reason is that dicaffeoyl quinic acid in coffee will condense saliva, lubricate protein, and produce a wrinkled and astringent feeling in epithelial tissues. Adding milk has a magical effect of "diverting the tiger from the mountain", because dicaffeoyl quinic acid will divert the target and bond with protein in milk, without destroying the lubricated protein in saliva.

Coffee milk is the first coffee milk that Nihef, the Dutch governor in Batavia, Indonesia, mixed coffee with milk in 166, that is, a lot of milk was added to coffee. The fragrant and mellow coffee and the fragrant and beautiful milk, the wonderful collocation of two classic drinks and the collision of two flavors form a drink with double taste enjoyment.

When people drink milk and coffee together for a long time, it will do harm to the liver, because this mixing will produce an unstable and indigestible emulsion. In order to reduce the harm, there is a trick: pour coffee into milk, not milk into coffee, and it is best to use skim milk. This will prevent the milk from spoiling in the stomach.