zest of 2 limes
1 finely chopped chilli
handful of chopped coriander leaves
Mash 150g butter until soft. Crumble over 100g feta, add the finely grated zest of 2 limes, 1 finely chopped chilli and a handful of chopped coriander leaves. Mash everything together with a little salt, then chill until needed.