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The Tail...

Cambridge, MA - The Sea Hag Restaurant & Bar is excited to announce it is open in Harvard Square. The establishment is a sister restaurant to Grendel's Den, a popular eatery located at 89 Winthrop St. in Cambridge.


Our restaurant offers globally inspired coastal food, sustainable seafood, and Massachusetts-raised grass-fed beef in a beautifully decorated dining room with bar seating and intimate booths. The menu features interesting takes on traditional public house fare along with cocktails, beer on tap and an eclectic wine list.


The Sea Hag Restaurant & Bar is open from 11:30 a.m. Tuesday through Friday lunch and dinner til 10 p.m., bar open til midnight. Saturday and Sunday we are open for brunch from 10 am to 3 pm and Saturday for dinner til 10 pm and drinks until midnight. Join us Sundays from 12 to 7 pm for Sunday Roast, featuring weekly specials and live music.


Media Contact

Kari Kuelzer

Owner, The Sea Hag Restaurant & Bar

& Grendel's Den Restaurant & Bar

Reach out to the Hag

Get in touch so we can start working together. Email to get in touch.

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By Sheryl Julian

 Published November 24, 2023

Harvard Square’s Sea Hag is the little sister to Grendel’s Den

The new place serves pub grub made from scratch.


By Kara Baskin

 Published November 14, 2023

From ice cream at Bailey’s to high school with Matt Damon, Grendel’s Den restaurateur Kari Kuelzer personifies Harvard Square, and now she has a new neighborhood pub: Sea Hag. Read More...

By Kara Baskin

 Published November 2, 2023

The team behind Grendel’s Den in Harvard Square has opened Sea Hag, replacing The Boathouse. Wash ashore for fish and chips, Jamaican beef patties, arancini, crab dip, raw bar delights, and muffins. Read More...

By Boston Restaurant Talk 

Published October 30, 2023

The Sea Hag opens in the former Boathouse space in Harvard Square Read More...

By Benjamin Cortez

Published October 30, 2023

New Nautical Nosh Spot, The Sea Hag Sets Sail in Harvard Square, Cambridge Read More...

By Marc Levy and Rónán Fitzgerald

Published June 30, 2023

Grendel’s Den owner Kari Kuelzer is expanding in Harvard Square, taking over the Boathouse location to open The Sea Hag Restaurant & Bar. Read More...

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