Pea and Ham Soup - Cooking like a Boss

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

3 tbsp 0.045 l 45 ml 9 tsp 0.19 cup 0.079 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
3 medium onion	finely chopped
3 large potato	peeled and cut into small cubes
salt
pepper
900g 0.9kg 1.98lb 31.7oz frozen peas
1200ml 1 ¹⁄₅l 80tbsp 240tsp 5.07cup 2.11pint chicken stock
300g 0.3kg 0.661lb 10.6oz thick cut ham