Grilled sirloin with garlic roasted potatoes, shaved asparagus and herb sauce

Fruit and vegetables

1 large bunch asparagus, shaved into ribbons with a mandolin or sharp knife

small pinch chilli flakes

500g/1lb 2oz floury potatoes (Maris Piper, King Edward, or Yukon Gold work well), peeled and cut into large chunks about golf ball-sized

1 tsp garlic granules

6 garlic cloves, crushed

1 tsp finely chopped garlic

1 lemon, zest and juice

Lemon zest (optional)

1 tsp onion granules

1 bunch fresh parsley, finely chopped

salt and pepper, to taste

20g/¾oz red onion, finely diced

1 sprig rosemary or thyme