In 2010, McGillin's Olde Ale House released a limited-edition beer to commemorate 150 years of drinking and carousing at the city's oldest operating tavern. This week, McGillin's 1860 IPA is returning to honor 25 years of ownership by Mary Ellen and Chris Mullins, who bought the business from family.

The American-style ale is made by Stoudts Brewing Co., which created it to mark 150 years of continuous operation since the Drury Street pub opened in 1860. The beer is unfiltered, as it would have been in the 1800s, and is made with multiple varieties of hops. The beer has a refreshing malty flavor and a hint of mild ginger on the finish.

It's one of three house beers on tap at McGillin's, which also pours McGillin's Real Ale and McGillin's Genuine Lager. All are brewed by Stoudts in Adamstown, Pa.

The IPA will be unveiled at a re-release party from 6 to 8 p.m. Thursday at McGillin's, where bottles will be sold at a discount price of $3.50. The ale is also available at Bell's Beverage at 2809 S. Front St. in South Philadelphia and at Narbeth Beverage at 844 Montgomery Ave. McGillin's representatives expect it will carried by other bars, restaurants, and stores in the future.

McGillin's 1860 IPA, $4.75 at McGillin's Old Ale House, 1310 Drury St.; mcgillins.com.