Press | The Sea Hag Restaurant & Bar

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. Monday 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 1 am. Media Contact Kari Kuelzer Owner, The Sea Hag Restaurant & Bar & Grendel's Den Restaurant & Bar

Cambridge Day

One Harvard Square project got a win Monday in Cambridge, while another faced a setback. Officials have held a third change, which could boost the coffers of business groups citywide, for... By Marc Levy Published September 16, 2025

Boston Globe

Harvard Square’s Sea Hag is the little sister to Grendel’s Den The new place serves pub grub made from scratch. By Sheryl Julian Published November 24, 2023

Boston Globe

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. By Kara Baskin Published November 14, 2023

Boston Globe

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. By Kara Baskin Published November 2, 2023

NBC10 Boston

The Sea Hag opens in the former Boathouse space in Harvard Square... By Boston Restaurant Talk Published October 30, 2023

Hoodline

New Nautical Nosh Spot, The Sea Hag Sets Sail in Harvard Square, Cambridge... By Benjamin Cortez Published October 30, 2023

Cambridge Day

Grendel’s Den owner Kari Kuelzer is expanding in Harvard Square, taking over the Boathouse location to open The Sea Hag Restaurant & Bar. By Marc Levy and Rónán Fitzgerald Published June 30, 2023