Lots of Midpeninsula taco joints are named "El Grullense" -- the name doesn't translate; it refers to someone from Jalisco -- and locals think this one is among the best. Burritos, entree plates and tostadas are also on the menu.
The restaurant has a pleasant, enclosed seating area , and there's free parking in a small lot and on nearby streets. The restaurant is across from Costco, if you need a break from shopping. El Grullense only takes cash, but there is an ATM on the premises.