ok, simply take your baking tray and place 2 big potatoes on it, Add more if you want more. Place in the oven for around 1hour 15mins or untill they are soft on 250 degrees and Grate some cheese (to be added later). Using the sharp knife cut a hole in the potatoes and remove the insides (like a pumkin) and place the insides into a bowl or jug. add milk, butter and little bit of cheese and mash all together using the fork. then refill potatoe skins add cheese to top and stick bk in ovan, for 10mins and your done.