Peel and cube patatoes, sweet patato and turnip, boil until soft with a small amount of salt. Chop corn beef into cubes. Peel and chop onion and garlic. Fry the onion, garlic and corned beef in pan with small amout of oil and spices, fry until soft. Mash patatoes, sweet patatoes and turnip when soft. Add the corned beef mixture to the mash and stir in evenly. Finally put entire mixture into a large baking dish, grill until brown and crispy, serve with steamed vegatables of your choice cover with home made gravy and enjoy!!! Grate cheese on b4 grilling if preferred...