Grünkohl
grunkohl, kale
Kale , also called leaf cabbage, belongs to a group of cabbage (Brassica oleracea) cultivars primarily grown for their edible leaves; it has also been used as an ornamental plant. Kale plants have green or purple leaves, and the central leaves do not form a head (as with headed cabbage).[citation needed] The stems can be white or red, and can be tough even when cooked.
Source: Wikipedia
Recipes
Grünkohl mit Pinkel (Kale with Sausage) - German Culture
Cooked kale and sausage is a delicious winter comfort food. Germans celebrate winter with a "Grünkohlfahrt", which is a brisk hike accompanied by schnapps and a warm kale dinner afterward. Cooked kale is mixed with mustard, bacon, and sausage for a nutritious...