When I was on honeymoon, some years ago now, I came across these fantastic Sicilian lemons. Their skin is really fragrant in cooking and they are very juicy too. You can use them roasted with fish, sliced very thinly in salads, and halved and put inside chicken. When roasted they go all jammy. This pasta recipe is great to use them in too, so try and find some – if you can't find any, use normal lemons instead.