Leek, Potato and Pea Soup for 6

Scaled to serve 5

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