I found a yummy authentic taqueria in Cambridge with great veg options
We ordered the quesadilla - yes you'd say that's boring but it came with this delish chipotle aoli that made it worth the order.
Even better was the enchillada in the green sauce with the queso fresco
And the fajitas looked very tempting, was too full to get a taste
The dishes were slightly more expensive than I expected but the food was a refreshing change. Also dont expect much of a sit down ambiance, the place is a larger version of a hole in the wall joint. Do try their chilled jarritos - I loved the mango!