Peel and wash the potatoes and cut into small cubes. Cook potatoes in boiling salted water for 10-15 minutes. Add peas to the potatoes 5 minutes before the end of the cooking time. Pour potatoes and peas into a sieve
Bring the milk and fat to the boil in a saucepan, add the potatoes and peas and puree with a blender. Season the puree with salt and nutmeg. Wash mint, dab dry, pluck leaves. Put 8 small leaves aside, chop remaining leaves finely. Stir the mint into the puree, distribute in 4 bowls, decorate with 2 mint leaves each