from: www.food.com

3 1/3 cups daikon radishes, peeled and sliced into match sticks
1/3 cup carrot, shredded (the presliced matchsticks in the produce section are perfect)
3 tablespoons granulated sugar
1/4 cup white vinegar (or rice vinegar )
1 1/2 teaspoons salt

Toss radish, carrot & salt together in large bowl. Let stand for 10 minutes. Squeeze dry.
Combine vinegar & sugar in small bowl. Stir until sugar is dissolved.
Pour over radish mixture. Toss until well coated.
Refrigerate up to a week.