As Fogg prepares to set sail for America, here are two fish carpaccio recipes to bid farewell to Japan and the Far East. The first is an amazing recipe for mackerel that includes the magical combination of pomegranate, lime and tequila; the second, a refreshingly light and tangy starter, especially good for a Christmas table. Both are very easy to make if you adhere to two rules of thumb: use the very best, freshest fish you can get hold of and use your sharpest paring knife to slice it.