WASHINGTON — Leave the jacket and tie at home. A classic steak establishment is flirting with a more casual concept.

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The Capital Burger recently opened its doors in D.C.’s Mount Vernon Square. The lunch and dinner dining spot, from the folks at The Capital Grille, features burgers “made with a proprietary beef blend,” hand-cut fries, house-made pickles, spiked shakes, cocktails, beer and wine.

Burger variations include a wild mushroom and Swiss burger, a blue cheese and truffle burger, and a French onion-style burger. Plates of tuna tartare, lobster and crab cakes, pan-fried calamari and a 7-ounce filet are also available — making The Capital Burger one classy burger joint.

The Capital Burger, 1005 7th St. NW, is open seven days a week from 11 a.m. to 11 p.m.; happy hour is from 3 to 6:30 p.m.