Chestnut and Bacon Soup - Cooking like a Boss

2 tbsp 0.03 l 30 ml 6 tsp 0.127 cup 0.053 pint olive oil	melt		cover and sweat over low-medium heat for 5 minutes	cook for 5 minutes until veg tender but not coloured	simmer for 30 minutes	remove bay leaf and thyme	blend until smooth
50g 0.05kg 0.11lb 1.76oz butter
2 small onion	chop
2 small leek	trimmed and washed	chop
2 stick of celery	trimmed	chop
2 small carrot	chop
2 clove garlic	peeled and crushed
2 bay leaf
2 sprig thyme
12 rashers smoked bacon	dice
600g ³⁄₅kg 1.32lb 21.2oz potatoes	peeled and cut into chunks
2l 2000ml 133 ¹⁄₃tbsp 400tsp 8.45cup 3.52pint veg or chicken stock
800g ⁴⁄₅kg 1.76lb 28.2oz cooked and peeled chestnuts