hop rosemary leaves very finely

Either whiz in blender with the butter or mix together in a pestle and mortar

Add butter, lemon and mix until all ingredients are combined

Check seasoning. Add sea salt and black pepper to taste.

Using clean hands, roll out the butter into a long sausage shape and wrap in cling film. Place in freezer until ready to use.

Slice off slices and serve with appropriate dish.

At the same time

Grill lamb chops to taste and serve, topped with rosemary butter.