In part three of our short guide to tapas, we meet a lady who has consumed more than is possibly good for anyone. The whole process of tapas bar hopping can be a mystery to some visitors to Spain. What time is tapas time? With which drinks will you be served a tapa? Just what are the rules of tapas touring?

Who better to ask that exiled Scot, Gayle Mackie. She runs tapas tours in the city of Granada, where tapas is served free with your drinks. I asked her for her some helpful hints. So Gayle, how might bars differ in the way they serve tapas? Gayle: "Well, in Granada, you will find two ways of serving a free snack with your drink....