Tannin, a natural component of red wines, found in grape seed, skins and stems.

单宁，葡萄酒中含有的一种天然成分。在葡萄籽，葡萄皮和葡萄茎中含量高。

youdao

Crush (break the skins) and de-stem the grapes. For most grape varieties, about 90% of the larger stems should be removed.

大部分葡萄品种而言，需要除掉90％的梗。

youdao

Crush (break the skins) and de-stem the grapes. For most grape varieties, about 90% of the larger stems should be removed.

大部分葡萄品种而言，需要除掉90％的梗。

youdao