This is just a joy and a delight. I love eating a selection of bits, rather than a plate of food,…read moreso it's really my kind of thing, but it's not everyone's cup of tea. That said, it's always really busy here, so I'm not in a minority.
Origens is actually a small chain of shops and restaurants, that concentrate on Catalan food. You can order some of the dishes to take away. This isn't a linen cloth establishment, but the service is efficient and friendly. There can be a problem getting in though. You might have to go for a walk and come back in an hour.
The menu is a little magazine, (in Spanish and English) that includes some of the recipes, and stories behind your meal and the ingredients, most of which are locally sourced. There's a really wide selection of food, the idea is you order lots of bits. So, the more of you there are, the more you get to taste.
I especially recommend the simple toasted bread slice with tomato (we eat it like this at home now, you basically rub the tomato and garlic on the bread and eat it like that), then try the the stuffed aubergine and the haricot beans with sausage all followed with their delicious creme Catalan.
Basically I can't wait to get back to Barca, just so I can carry on exploring the menu.