Source: GOOP 3 small cloves garlic, pushed through a press 2 1/2 teaspoons Dijon mustard 2 tablespoons real Vermont maple syrup 1/3 red wine vinegar 1 cup extra virgin olive oil coarse sea salt freshly ground black pepper 2 1/2 large heads of endive, washed, chopped 1 1/3 large head radicchio, washed, chopped 4 large…