Pea and Ham Soup - Cooking like a Boss

Ham can be substituted for pre-boiled gammon. Very large portions for two but very morish.

4 tbsp 0.06 l 60 ml 12 tsp 0.254 cup 0.106 pint butter	heat on low-medium	stir in until coated in butter	cover and sweat 10mins	boil until peas float to surface	blend until smooth	add ham	bring to simmer	season
4 medium onion	finely chopped
4 large potato	peeled and cut into small cubes
salt
pepper
1200g 1 ¹⁄₅kg 2.65lb 42.3oz frozen peas
1600ml 1 ³⁄₅l 106 ²⁄₃tbsp 320tsp 6.76cup 2.82pint chicken stock
400g ²⁄₅kg 0.882lb 14.1oz thick cut ham