Red Russian kale originated in Siberia prior to 1885 and is considered an heirloom variety. This variety is easily recognized by its richly colored burgundy stems and purple tinted leaves. They are flat and toothed like an oak leaf with an overall dark green color and deep red veins. Red Russian kale offers a mild nutty flavor that is slightly sweet and earthy with a hearty texture.An excellent source of vitamin C, Red Russian kale provides iron, vitamin A, calcium, magnesium, potassium, protein, carbohydrates and dietary fiber. One half cup of chopped boiled kale contains about 18 calories.