Slow Cooker Beef Bolognese Sauce

strips of bacon/50g bacon or pancetta (cut)

large onion (diced)

medium carrots (diced)

celery stalks (diced)

garlic cloves (minced)

X 14oz/400g cans of chopped tomatoes

cups/500 ml water

dried basil

dried oregano

salt

lbs extra-lean ground beef