Burgers - Cooking like a Boss

Burgers. Easy ones. With Stilton in the middle. Recipe makes 4 very respectably sized burgii.

1012 ¹⁄₂g 1.01kg 2.23lb 35.7oz minced beef		mash together in a bowl	divide into 2N flattened patties for N people	sandwich	medium grill for 10 minutes flipping half way
2 ¹⁄₄ onion	finely chopped
2 ¹⁄₄ celery stick	finely diced
2 ¹⁄₄ tsp 0.011 l 11 ¹⁄₄ ml ³⁄₄ tbsp 0.048 cup 0.02 pint mixed herbs
2 ¹⁄₄ tsp 0.011 l 11 ¹⁄₄ ml ³⁄₄ tbsp 0.048 cup 0.02 pint English mustard
salt
pepper
112 ¹⁄₂g 0.113kg 0.248lb 3.97oz blue Stilton	crumbled