We drove past this little gem on our way to our hostel, and we couldn't believe our luck. We ate here twice and easily made some of the vegetarian options vegan by omitting cheese etc. Both meals were delicious, though you may want to ask for the salt and pepper as I'm pretty sure they don't use any in the cooking. We also asked for some aji picante, and received a chilli oil that was actually spicy! This is one of the very few places in Argentina we found anything remotely hot. The coffee, wine, and cocktails were also great. If you're heading to El Chalten you won't want to miss this lovely restaurant.
Cons: Not 100% vegan