Lamb and goat are very interchangeable. In a lot of Greece when you order Lamb you are in fact getting Goat. I actually prefer goat and guess that's why the recipe jumped out at me. A couple of places round here are now selling goat, but it tends to be very fatty and I would try it next time with lamb - dd1 didn't like the bones in the goat (I am assuming I had what the original recipe asked for as it was cubed on the bone) nor the fatty bits (she hates fat), dd2 decided she didn't like the meat, lol (she does eat lamb and has eaten goat before) and dd3 loved pulling the bones out!!