Grow Heirloom Mustard - Plant Tatsoi Mustard Seeds:

Also called Spoon Mustard, Tatsoi Mustard has small, dark green spoon-shaped leaves that are best eaten raw. When mixed with other greens in a salad, Tatsoi enhances the flavor and nutritional value. Grow as you would your lettuce seeds, in cool weather and in succession plantings to create that constant supply.