The fish is always dipped in batter, which is a kind of liquid mixture which hardens upon frying. After that, it will be fried for a short time. The phrase 'fish & chips' implies that it will be fried in batter; of course, in a fish restaurant, grilling or boiling would be alternatives. Fish cooked like that do not have batter. Typically Fish and Chips is eaten with lots of vinegar and salt. 