A kind of tea drunk in a hotel is not tea, but something similar to rice. Soaked in water, it smells like a thick cake, not big. ...

According to your description, it should be bitter buckwheat tea.

Buckwheat tea is a beverage made by screening and baking buckwheat seeds. The scientific name of tartary buckwheat is F.tataricum, which is divided into common tartary buckwheat and black tartary buckwheat. The shell of common tartary buckwheat is yellow and white; Black tartary buckwheat is a pearl black tartary buckwheat, which is called "black pearl" and its shell is dark black. This kind of tea is fried rice tea. Tartary buckwheat likes to be cool and barren, and it grows mostly in alpine mountainous areas, and its seeds are edible. The main producing areas are Sichuan, Shaanxi, Yunnan, Guizhou and Shanxi.

Some tartary buckwheat teas are made of tartary buckwheat, and some are made of black tartary buckwheat. The effective components of black tartary buckwheat are 3~5 times that of common tartary buckwheat, and the "black tartary buckwheat tea" made from black tartary buckwheat is definitely better than the "tartary buckwheat tea" made from common tartary buckwheat.

The whole-plant tea type is made of stems, roots, flowers, leaves and seeds of buckwheat, and the whole-embryo type is wheat grains fried with buckwheat with germ.