• 1 (14-oz.) can diced tomatoes
Combine potatoes, carrots, celery, garlic and ginger in an electric slow cooker. Toss in half of flour and season with salt and pepper. Scatter bay leaves over vegetables.
Season pork generously with salt and pepper, sprinkle with thyme and allspice, and toss with remaining flour to coat. Place pork over vegetables in the slow cooker. Add 2 cups water and tomatoes, cover and cook on low for 8 hours.
Discard bay leaves. Remove pork roast and slice or pull meat off bone into large pieces. Serve in bowls with vegetables and broth.