By Kathy Curran, WBZ-TV

BOSTON (CBS) – The Guinness is flowing and the corned beef is flying out of the kitchen at the Lir on Boylston Street in Boston.

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They’re back in business just in time for St Patrick’s Day and trying to make up for the business lost when the lights went out during the massive Back Bay blackout.

“The power went out Tuesday night at 7:30, we had a private party upstairs, we had to shutdown and had to get everyone out of the building. We opened up yesterday for lunch,” Bar Manager Erin Kiley said.

Boxes of lobster and scallops are delivered around the corner while crews work the lines down the street trying to restore permanent power. Mayor Menino has called for an investigation.

The Department of Public Utilities and the Attorney General want to make sure ratepayers aren’t hit with the repair bill and that this doesn’t happen again.

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Attorney General Martha Coakley wants to make sure that many of the costs involved will be born by shareholders, not ratepayers.

“Under the regulation if power is out for 12 hours they have and obligation to pay restitution to the restaurants and any others for spoiled product,” Mayor Menino said.

There’s lost business, lost food and wages. At the Lir they were shutdown for a day-and-a-half.

They hope the lights stay on and the luck of the Irish brings customers their way.

Kiley gives her pitch.

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“Come down to the Lir for St Patrick’s Day. It’s supposed to be a beautiful day, we’d love to have you,” she said.