Chestnut and Bacon Soup - Cooking like a Boss

1 ¹⁄₄ tbsp 0.019 l 18 ³⁄₄ ml 3 ³⁄₄ tsp 0.079 cup 0.033 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
31 ¹⁄₄g 0.031kg 0.069lb 1.1oz butter
1 ¹⁄₄ small onion	chop
1 ¹⁄₄ small leek	trimmed and washed	chop
1 ¹⁄₄ stick of celery	trimmed	chop
1 ¹⁄₄ small carrot	chop
1 ¹⁄₄ clove garlic	peeled and crushed
1 ¹⁄₄ bay leaf
1 ¹⁄₄ sprig thyme
7 ¹⁄₂ rashers smoked bacon	dice
375g ³⁄₈kg 0.827lb 13.2oz potatoes	peeled and cut into chunks
1 ¹⁄₄l 1250ml 83 ¹⁄₃tbsp 250tsp 5.28cup 2.2pint veg or chicken stock
500g ¹⁄₂kg 1.1lb 17.6oz cooked and peeled chestnuts