beet beetroot beta-vulgaris color coloration coloring colour colouration colouring cooked cubed cubes cuisine diced edible flavor flavour food garden-beet ingredient nutrition nutritional produce red red-beet root-vegetable surface surfaces table-beet taproots texture textures vegetable vegetables appearance baby-beets beets bulb bulbs cook cooking cut half halved leaves raw sliced uncooked beetroot dye beta vulgaris betacyanins betaine betanin carotenoid crimson cultivar firm garden beet halves healthy nutritious purple radiating red beet red food colourant reddish rings root vegetable stain staining table beet