First, buy the freshest fish possible. (Give it a sniff - if it has a distinctive fishy smell it is not fresh). Secondly, lay the fish on a piece of silver foil, then add lemon slices and a little butter. Finally, wrap the fish up tightly and pop it in the oven to cook.
While the fish is cooking, boil a pot of water and add a splash of vinegar. This will help remove any last trace of fishy odours while your supper cooks to perfection.
Three handy gadgets for cooking fish:
Cameron gourmet mini indoor or outdoor food and fish smoker, £39
Prestige wide fish slice turner, £4.99
Lakeland fish & vegetable microwave cooking bags, £4.65