Method:
Start by dicing all the vegetables, you can go as fine or as chunky as you want, I prefer a more chunky dice in this type of soup.
Dice your pancetta into Lardons (you can always ask your butcher to do this!)
Put a medium size pot on a medium heat and add the pancetta, when the fat starts to render and crisps up add the onion, garlic and celery, season with a small amount of salt and cook on a low heat for 3-4 mins.