If you find yourself in Jerez de la Frontera, then you must visit Abaceria Cruz Vieja. It's a tapas bar located in an old grocery store, and in my opinion, it's one of the best in Jerez.
It's beautifully decorated, and the atmosphere is great. It is excellent value for money, and the friendly waiters couldn't have been nicer.
We sampled various tapas dishes, and even ate breakfast here one morning - the 'pan con tomate' (toasted bread and tomatoes - a classic Catalan tapa) was delicious. At night, we thoroughly enjoyed the delicious jamon with a glass of sherry.
Having visited a couple of times on our time in Jerez (we became regulars during our three day stay!) we went for a quick drink before the wedding we were going to, and were given a sherry on the house - nice to know you can make friends that quickly in your new 'local'!
If you miss it, you'll miss out, so if you're planning on a trip to Jerez, and want more information on the bar then visit the official website here.