Ganbara
One of the best pintxos bars. Try the omelette and the prawns on a plancha. It is quite small so best to get there early.
Txepetxa
It is all about the anchovies. Just ask for a selection of their best anchovy dishes and savour them.
Hidalgo 56
This is worth the short walk away from the old quarter and into Gros. The morcilla volcano is excellent, as is the tomato and anchovy tartare.
Borda Berri
Most of the food on offer is top notch, but the risotto is particularly good.
La vina
Famous for their cheesecakes, which is a must-try, this place is fundamental to any trip to San Sebastian.
Gandarias
High quality pintxos; the txangurro (spider crab) is one of the best around.
Cuchara de San Telmo
This place is always as busy as it is small, so it is important to get there early. The suckling pig is excellent.
La Cepa
A really good all-rounder with excellent service (they even had a highchair for our little girl). The lamb meatballs are particularity good.
El Tamboril
Right in the middle of the old town, go here to try the deep fried langoustines.
Goiz Argi
A tiny place, but if you can get in try the prawn bruschetta; they are excellent.
A Fuego Negro
The quality had dropped a bit here on our last visit, but the sweetbreads are good enough to make the visit worthwhile.