chard and white bean stew

INGREDIENTS

• 1 pound Swiss chard (can also swap kale, spinach or another green), ribs and stems removed and cleaned
• 3 tablespoons olive oil
• 1 cup (5 1/4 ounces) chopped carrots
• 1 cup (5 ounces) chopped celery
• 1 cup (4 1/4 ounces) chopped shallots, about 4 medium
• 2 garlic cloves, finely chopped
• 1 cup dry white wine
• 2 15-ounce cans (or about 3 3/4 cups) white beans, drained and rinsed
• 2 cups (or more to taste) vegetable broth
• 1 cup pureed tomatoes (from a can/carton/your jarred summer supply)
• Salt and freshly ground black pepper
• 3 fresh thyme sprigs
• 1 bay leaf
• 1 tablespoon sherry vinegar