Leek, Potato and Pea Soup for 6

Scaled to serve 10

6.7 large leeksslicedsweat 10 minboil and simmer 10-15 minsimmer 5 minutesblendserve
150.0 g of butter
3.3 medium potatoes
3.3 l of stock
375.0 g of frozen peas
3.3 tsp of mint sauce
1.7 tbsp of parsley
1.7 salt
1.7 pepper
1.7 blob of soured cream