Chop potatoes into chunks and lay up in steamer baskets
Lay peas up in steamer baskets
Cook potatoes on full steam 100C for 27 mins
When timer goes add peas on top shelf and cook a further 3 minutes
Open oven and let steam subside drying out potato
Put into large bowl and smash together with butter, peas & S&P
Form into 135 gram potato cakes