Preheat the oven to 230C.

Whizz the prosciutto, lemon, garlic and lemon zest in a processor. Add olive oil to slacken to a mushy paste.

Pack the stuffing / baste around the meat, poking into any nooks or crannies. Stab the meat with a knife if necessary.

Put the meat in the oven and turn down to 170C.

Cook until done to your likeness - 1hr 30mins for this one.