Black Spanish Radish, or Black Radish, is a quite interesting variety of winter-growing radish, like the Chinese daikon. Similar in size to a white turnip, black radishes are dull black or dark brown on the outside; inside they have a firm crisp white flesh that has a sharp taste.
The black radish has several health properties, not only is it a good source of minerals and vitamins, especially Vitamin C, making it a good combatant against winter colds and influenza, it is also a liver tonic, stimulating the production of bile and reducing the stones in the gallbladder, and a diuretic, promoting the elimination of toxins and stones through the kidneys. You can get this in herbal form, as a capsule, or, as we did, juice one black radish along with 6 carrots and 1/2 lemon and 1 small beetroot to make a good gallbladder cleanse. We were finally able to find some black radishes for sale at Highland Farms in Mississauga, I haven't seen them in other supermarkets, and, as I've read, black radishes are not grown by a large number of farmers, so it may be hard to find them.