Black-Eyed Pea and Cabbage Slaw

Ingredients

• 1 1/2 cups dried black-eyed peas, picked over
• 1 bay leaf
• 2 parsley sprigs plus 1 cup minced parsley leaves
• 1/4 cup white-wine vinegar
• 3 tablespoons Dijon mustard
• 1/3 cup drained bottled horseradish
• 3/4 cup vegetable oil
• a 2 1/2- to 3-pound cabbage, grated coarse in a food processor (about 10 cups)
• 6 carrots, grated coarse in a food processor (about 4 cups)
• 1/2 cup minced scallion
• 2 large garlic cloves, minced