It's a holiday miracle! Harvard Square's Shake Shack opened today. It's a soft opening. They'll only serve desserts — shakes, custards, and concretes — until the new year. This report comes from PigTrip via Eater Boston, which notes that all Shack locations are closed on Christmas (sorry). P.S.: They have a fireplace.
Shake Shack, 92 Winthrop St., Cambridge