Recipe by Suzanne Goin, Bon Appetit Ingredients: 1/2 pound seedless red or purple grapes 1 tablespoon minced shallot 1 tablespoon (or more) Sherry vinegar 1/4 teaspoon kosher salt plus more for seasoning 1/4 cup extra-virgin olive oil 1
tablespoon saba or aged balsamic vinegar plus more for drizzling Freshly ground black pepper 1/2 pound arugula (about -LSB-...]