1kg/2lb 3oz chuck steak, or good minced steak
1 onion, peeled and finely chopped
olive oil
a pinch of cumin seeds
1 tablespoon coriander seeds
sea salt and freshly ground
black pepper
a handful of freshly grated Parmesan cheese
1 heaped tablespoon
English mustard
1 large free-range egg
115g/4oz breadcrumbs
8 burger buns
for the chips

2kg/4½lb large potatoes, skins left on, cut into chips 1cm/½ inch thick
olive oil
1 whole bulb of garlic
freshly ground black pepper
3 sprigs of fresh rosemary
zest of 1 lemon
85g/3oz sea salt