Orla Walsh is a Registered Dietitian, owner of Orla Walsh Nutrition, former performance nutritionist to the Irish Olympic team and regular contributor for the Irish Independent newspaper, RTE and Newstalk FM.
Get a tin of tuna (in oil not brine). Fold kitchen paper in 4 and place on top. Press into the oil a little and then light all 4 corners. Leave it light like a candle for about 20 mins. When it goes out, peel off the paper and eat the delicious tuna.