Red Ursa, or Red Russian kale is a rare, gourmet kale variety has red-purple veins on slate-green, wavy-margined leaves. Cool weather intensifies its color. Steamed lightly, the frilly leaves make an attractive garnish. If using in soup, add kale at the end to avoid overcooking. Our organic kales are grown in a greenhouse without the use of synthetic pesticide or herbicide. The kale plants are freshly harvested each morning from a small urban family farm right here in Bangkok. Vegan and omnivores agree that everyone can add more dark leafy greens to their diet. On top of kale being obviously one of the healthiest vegetables for human to eat: "In 2015 a double-blind, placebo-controlled study confirmed kale contains high amounts of lutein & zeaxanthin, which increases neural processing speed & efficiency in people. " - Rhonda Patrick, Phd All our vegetables have been tested for nitrite and pesticides.