Ham and Bean Soup

Ingredients (13)

• 1 pound ( 450 g ) dried navy beans
• 5 quarts (4.7L) water , divided
• Kosher salt
• 2 tablespoons (30ml) extra-virgin olive oil
• 1 large yellow onion ( 12 ounces ; 340g), roughly chopped
• 2 small carrots ( 6 ounces ; 170g), peeled and roughly chopped
• 2 celery ribs ( 5 1/2 ounces ; 155g), roughly chopped
• 2 medium garlic cloves , roughly chopped
• 2 sprigs fresh thyme
• 2 sprigs flat-leaf parsley , plus finely chopped parsley leaves and tender stems for garnish
• 1 bay leaf
• 2 1/2 pounds (about 2 large; 1.1kg) smoked ham hocks
• Freshly ground black pepper