Tatsoi

Tatsoi (Brassica rapa subsp. narinosa or Brassica rapa var. rosularis) is an Asian variety of Brassica rapa grown for greens. This plant has become popular in North American cuisine as well, and is now grown throughout the world. The name comes from Mandarin (塌棵菜 tā kē cài). It is also called 'Chinese flat cabbage', 'rosette pakchoi' or 'broadbeaked mustard', 'spoon mustard', or 'spinach mustard'. Cantonese transliterations include 'tat soi', 'tat choy'.