Heat the middle size saucepan over medium heat add the oil and fry the bacon till brown and crispy [5-10 mins]
While the bacon is frying, chop up the carrot, onion and celery ready to add to the pan when the bacon is cooked. The veg will deglaze any burnt bits at the bottom of the pane
Add the chopped veg along with the garlic and rosemary and fry until soft over a medium heat [5-10mins]
When the veg is softened add the mince and turn up the heat to brown the mince [2-3 mins]
Add everything else, bring to the boil and then reduce to a simmer for at least 40 mins