1. Cook potatoes in boiling salted water until tender; drain. 2. Peel and cube; place in large bowl. 3. Combine vinegar, sugar, mustard seed, celery seed and 1/2 tsp salt; pour over warm potatoes and toss to coat. 4. Cover and chill. 5. Just before serving, add corned beef, cabbage and radishes. In a small bowl, combine mayo, relish, onions, milk, mustard if desired and remaining salt; pour over salad and toss to coat. ---------------------------------------------------------------------------
Nutrition
Ingredients