Add the oil to a wide, deep, heavy-based pan, so that it fills to a depth of about 1 cm. Flatten the garlic with the back of a knife and add to the oil, gently heat for 5 minutes then remove the garlic. Turn up the heat a little and add a few pieces of halloumi at a time, frying for 1-2 minutes and turning regularly with tongs, until they are golden and crispy all over. Transfer to a piece of kitchen paper and repeat.
