Tatsoi (Brassica narinosa or Brassica rapa var. rosularis) (???, ???, ???, or ??? in Chinese; and ???? or ?? in Japanese), also called spinach mustard, spoon mustard, or rosette bok choy, 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 plant has dark green spoon-shaped leaves which form a thick rosette. It has a soft creamy texture and has a subtle yet distinctive flavour. It takes 45-50 days to harvest and can withstand temperatures down to -9.4 degrees C (15 degrees F). Tatsoi can be harvested even from under the snow. Organic food is produced by farmers who emphasize the use of renewable resources and the conservation of soil and water to enhance environmental quality for future generations. Organic meat, poultry, eggs, and dairy products come from animals that are given no antibiotics or growth hormones. Organic food is produced without using most conventional pesticides; fertilizers made with synthetic ingredients or sewage sludge; bioengineering; or ionizing radiation. Before a product can be labeled "organic," a Government-approved certifier inspects the farm where the food is grown to make sure the farmer is following all the rules necessary to meet USDA organic standards. Companies that handle or process organic food before it gets to your local supermarket or restaurant must be certified.