Leek, Potato and Pea Soup for 6

Scaled to serve 9

6.0 large leeksslicedsweat 10 minboil and simmer 10-15 minsimmer 5 minutesblendserve
135.0 g of butter
3.0 medium potatoes
3.0 l of stock
337.5 g of frozen peas
3.0 tsp of mint sauce
1.5 tbsp of parsley
1.5 salt
1.5 pepper
1.5 blob of soured cream