Grilled Mustard Potato Salad
3 Yukon Gold potatoes, coarsely cut
3 red potatoes, coarsely cut
1/4 cup olive oil
3 tablespoons white or cider vinegar OR lemon juice
1 tablespoon Dijon mustard
1/4 cup capers
1/2 teaspoon salt
1/4 teaspoon ground pepper
Cook potatoes in boiling salted water 10-15 minutes until just tender. Drain and place in a bowl.
In a small bowl, mix oil, vinegar or lemon juice, mustard, capers, salt and pepper until emulsified. Toss half the sauce over the warm potatoes.
Arrange potatoes in a single layer on aluminum foil or grill-safe pan and grill over high heat 7-9 minutes. Remove, toss with remaining sauce and serve warm.