There are several Salvadoran-owned food trucks scattered about Langley Park (I saw one hidden behind the place that used to be Fontana Bowl-o-rama).
The Pupuseria y Taqueria La Miguelena truck is nominally from Hyattsville, but was parked in the driveway of Crystal’s [Hair] Salon at the intersection of University Blvd. E and Merrimac Dr., just a couple blocks west of New Hampshire Ave. If you’re driving up University, there will be six flags flying in front of Crystal’s – that’s your landmark.
This truck sells 13 different items (yuca con chicharron, sopa de res, carne asada, pupusas revueltas, etc.), and I ordered two Tacos de Lengua ($3 each, if I recall). Â The lady making the tacos only spoke broken English, but was very friendly, and seemed to genuinely appreciate the business.
The tacos were double-wrapped in lightly grilled tortillas, with really good cubes (not slices) of lengua, and each one had a refreshing slice of avocado, a lime (which I recommend squeezing), cilantro, pale pink tomato, and a motherlode of raw red onion.
So prominent was the red onion that it if you have these tacos for lunch on date night, it will become Fright Night.