uncooked rhubarb
Low in calories but rich in vitamin K and dietary fiber, particularly insoluble fiber contributing to the characteristic texture. Raw rhubarb contains oxalic acid, which binds calcium and should be considered by those with kidney concerns or on restricted calcium diets.
About
Rhubarb (Rheum rhabarbarum) is a perennial herbaceous plant of the Polygonaceae family, native to Central Asia and cultivated worldwide for its edible leaf stalks (petioles). The plant produces thick, cellulose-rich stalks that range in color from pale pink to deep crimson, depending on variety and growing conditions. Raw rhubarb is distinctly tart and acidic, with a flavor profile dominated by malic and citric acids, and possesses a fibrous, crisp texture when fresh. The large leaves, while structurally similar to the stalks, are toxic due to high concentrations of oxalic acid and are discarded in culinary use. Common varieties include 'Hothouse' (pale, tender stalks), 'Victoria' (deep red, later season), and 'Timperley Early' (early, forced variety).
Culinary Uses
Uncooked rhubarb is primarily used in sweet applications where its tartness is balanced with sugars. It appears in jams, compotes, pies, crumbles, and desserts throughout Western and Northern European cuisines. The stalks are occasionally incorporated raw into salads or served as candied preparations, though their high acidity and fibrous texture limit raw consumption. Rhubarb pairs naturally with strawberries, ginger, and warming spices such as cinnamon and cardamom. The ingredient requires substantial sugar to mellow its astringent qualities and is rarely consumed without sweetening.