Pre-heat the oven to 140℃/280F fan, 160℃/320F Gas Mark 3.
Blitz together the mint, rosemary, garlic, lemon zest, salt and pepper and olive oil.
Add more olive oil if needed to make a smooth paste.
Use a sharp knife to carefully make slits crossways, then add the rub liberally all over the lamb shoulder in a lidded casserole dish.
Put the lid on and cook for about 4 hours, until the meat pulls apart with a spoon.
Did you make this recipe? Click here to let us know how it went and give it a ⭐️ rating! Your feedback helps us to make more recipes you really want.