Slice radishes by hand or use the slicing blade of a food processor. Place radish slices and onions in a large bowl or crock. In another bowl stir together vinegar, sugar, and salt until sugar is dissolved. Pour over radish mixture.
Cover and refrigerate at least 8 hours or overnight before serving. (Radish mixture will have a very pungent aroma.) Makes 2 cups.
vit. C (mg)
Percent Daily Values are based on a 2,000 calorie diet