Ingredients

1 1/2-2 pounds sweet potatoes (2 to 3 medium potatoes)
1 1/3 teaspoons Dijon mustard
1 1/3 teaspoons whole-grain mustard
2 2/3 teaspoons white wine vinegar
1/8 teaspoon salt
1 1/3 teaspoons olive oil
1 1/3 celery stalk, thinly sliced
2 2/3 tablespoons slivered raw almonds
2 2/3 scallions, thinly sliced