Chestnut and Bacon Soup - Cooking like a Boss

2 ¹⁄₂ tbsp 0.037 l 37 ¹⁄₂ ml 7 ¹⁄₂ tsp 0.159 cup 0.066 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
62 ¹⁄₂g ¹⁄₁₆kg 0.138lb 2.2oz butter
2 ¹⁄₂ small onion	chop
2 ¹⁄₂ small leek	trimmed and washed	chop
2 ¹⁄₂ stick of celery	trimmed	chop
2 ¹⁄₂ small carrot	chop
2 ¹⁄₂ clove garlic	peeled and crushed
2 ¹⁄₂ bay leaf
2 ¹⁄₂ sprig thyme
15 rashers smoked bacon	dice
750g ³⁄₄kg 1.65lb 26.5oz potatoes	peeled and cut into chunks
2 ¹⁄₂l 2500ml 166 ²⁄₃tbsp 500tsp 10.6cup 4.4pint veg or chicken stock
1000g 1kg 2.2lb 35.3oz cooked and peeled chestnuts