If you're looking for a nicer dinner, you definitely should check out Sarma -- https://www.sarmarestaurant.com/ -- undoubtedly the best food in Cambridge (and in my opinion the whole Boston area).

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It's very difficult to get a reservation, but the "secret" beta is that they have a ~20 seat bar that is not reserved - usually very doable to get a seat on a weeknight, especially as a party of 1. They serve the full menu at the bar and it's a great experience. Can't recommend it enough!