There are many options for Mexican food in Kensington, but this definitely has to be the best option for cheap authentic Mexican eats. For the price of one single burrito at Chipotle, you can get two here, all with fresher ingredients (like freshly scooped avocado), what appears to be mostly homemade sauces and really good sized portion.
The one downside to Salsas is the lack of seating inside. There are a few small, fairly unwelcoming tables along the wall and toward the front. But it crowds into where people will be standing to place their orders. You're better off getting take out if you're thinking about dropping by.
Next visit I want to try the tacos and a few small portions of their menu outside of the burrito offerings.