Casa Mingo is an Asturian restaurant in the Príncipe Pio area. My Spanish roommates brought me here one Sunday and I was shocked to see that the line was out the door. However, the half-hour wait was completely worth it; we all left happy and full, and for a very cheap price at that.
With that being said, be sure to come here hungry and with a good group of friends so various plates can be shared. Their menu isn’t huge but it doesn’t matter, because what they do offer is absolutely delicious. Their specialities are roasted chicken and cider (sweet and natural are offered), but other plates that you can try are the croquetas, goat or manchego cheese, and chorizo. We split all of the above, two bottles of cider and a dessert each, and we didn’t pay more than 12 euro a person. Spain, I love you and your cheap prices.
Oh, and here’s a fun thing! When you order your bottle of cider, you can ask the waiter to either pour it for you or teach you how to pour. The thing about Asturian cider is that it’s traditionally poured with one’s arm extended above the head.