There are two kinds of bamboo shoots, one is called sweet bamboo shoots and the other is called bitter bamboo shoots. So you stewed beef with fresh bamboo shoots with bitter taste, and you bought bitter bamboo shoots. Sweet bamboo shoots also have bitter taste, but they are very light. Bamboo shoots are cold food with astringency, so they are bitter.

According to Compendium of Materia Medica, "Bitter bamboo shoots taste bitter, sweet and cold", fresh bamboo shoots are bitter, which is caused by the chemical components contained in bamboo shoots, but even so, bamboo shoots still have very high nutritional value.

Extended data:

Bitter bamboo shoots are mostly produced in subtropical monsoon climate areas. Bitter bamboo shoots are very common in northern Guangdong, eastern Fujian and Yibin, Sichuan. The general season starts from 1 month every year and lasts until April, mainly due to the influence of weather and climate.

In northern Guangdong, Lutian, Conghua is the main producing area, and the Chinese New Year is the earliest season every year, which can be sold to 20 yuan for more than one catty. Bitter bamboo shoots can be described as a delicacy.

Bitter bamboo shoots are bitter and sweet in taste, cool but not cold in nature, and have the effects of losing weight and fitness, invigorating stomach and resolving food stagnation. People usually use bitter bamboo shoots, ribs and pickles to make bitter bamboo shoots pot, which is delicious and memorable after eating.

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