Llar de l'all i oli ("The House of Garlic Mayonnaise")
Calle Conquista 87, Badalona (just outside Barcelona), 383-5307 is my favorite restaurant.
Free range country chickens, plump and juicy, are grilled over an old-fashioned brazier and slathered with garlic mayonnaise (made the hard way, by hand and without eggs!). Potatoes and whole heads of garlic get the same treatment.
Family-run place, extremely warm and the very epitome of all that is good about Catalan food. It's perfect.