Hi Eks,
Bon dia indeed!. Always a pleasure to hear from you.
Calçotada: my list includes a wide range of very different places, from the rustic no-frills ones to the posh version of calçotada in the uptown. As I mentioned, I haven't been in most of them -for a calçotada anyway-, so I can't vouch for the whole list.
Cal Pep is one of those unshakable places that somehow survive decade after decade in the city. It’s been ages since I last went, but I imagine they must still be doing something right if they’re still around. Barcelona’s restaurant scene is brutally competitive — you either have serious financial muscle to handle the sky-high commercial rents, or you’re doing things really well and making enough to stay afloat. Otherwise, you sink fast. I'd say that Cal Pep is in the second case.
Btw, I assume you're talking about Cal Pep in Ciutat Vella, right? There's another Bodega Cal Pep (or “Cal Pep de Gràcia”) on Carrer Verdi in Gràcia, but they're not related. Curiosity: "Pep" is short for Josep (Catalan for Joseph), a popular first name here, and "Ca" is an old Catalan word meaning "house of", a term very commonly used in small towns (and neighbourhoods in the cities in old times, where everybody knew each other). So Ca'l Pep, it simply means "house of Joseph", hence you can see how the name can be common to many restaurants and bars...
WHAT IS A CALÇOTADA? (pronounced: kahl-soh-TAH-dah)
For those that don't know: a calçotada, mentioned earlier, is basically a big outdoor feast in Catalonia where people grill these long, sweet onions called calçots over open flames until they’re black on the outside. Then you peel them with your hands, dip them in a killer almond-and-pepper sauce (romesco), and eat them standing around with friends, usually getting messy and drinking wine from a porró (a glass pitcher you pour straight into your mouth). It’s smoky, loud, fun, and feels like a mix between a backyard BBQ and a harvest party.
For those natives of the East Coast, a calçotada would be 'similar' (mind me!) to your New England clam bake or oyster roast: outdoor, smoky, communal, and seasonal. I once had a dear friend -and fellow high schooler from my time in the US- coming to a calçotada, and she described it as a "Catalan clam bake with onions" LOL!
Enjoy!: https://www.youtube.com/watch?v=DBUQwkwMeNg