Shangjuan


The shangjuan, or Ichang lemon, is a cold-hardy citrus fruit and plant originating in East Asia.
According to some it is the best bet for cold-hardy citrus with edible fruit. It is believed to be a hybrid of pomelo and Ichang papeda and thus may also be called Ichang pomelo.

Description

Shangjuan forms a shrub or small tree, which is commonly thorny. Leaves are notable for a large petiole, resembling those of the related Kaffir lime and Ichang papeda, and are fragrant. The large fruit has a flavor resembling a mixture of lemon and grapefruit, and is occasionally used as a substitute for those fruits. Like other citrus fruit with C. cavaleriei ancestry, the shangjuan is relatively cold-tolerant.
The fruit looks a bit like a grapefruit, and can be either pale yellow or green depending on the degree of ripeness. Shangjuan fruits, which are very aromatic, can be as large as a grapefruit.