This is a Sienese recipe from our old family friend, Rossana. It’s rather like an intensely herby version of a classic aglio, olio, pepperoncino. It’s perfect in an emergency, when you’ve got home, want dinner in 10 minutes but don’t have any food aside from pasta, olive oil, garlic and a few sprigs of rosemary either knocking around the fridge or snipped from the bush on your windowsill (you can also used dried roseamry at a pinch). The original recipe doesn’t include chilli flakes, but I add a generous pinch as I find it add another layer to the herby garlic flavour and keeps every mouthful interesting.