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May showcases a Tex-Mex burg, a Chi-town creation, an Italian job and a patty melt in the latest roundup of D.C. BOTMs.

BGR The Burger Joint

This month, BGR is celebrating mashed-up avocados with their annual In Guac We Rock BOTM featuring fresh guacamole, tortilla strips and one fat slice of a beefsteak tomato. (Note: we love cow-themed produce)  9 Locations in D.C., Maryland and Virginia | bgrtheburgerjoint.com  

Burger Tap & Shake

Finding a good patty melt in D.C. can be quite the challenge but this month BTS is stepping up to the plate with their own attempt at the burger-turned-sandwich. The Tin Cup is a patty melt on rye topped with Swiss, caramelized onions and sweet pickle dijonnaise. Could this be the One?  2200 Pennsylvania Ave NW | DC | burgertapandshake.com   

Bobby's Burger Palace

Bobby brings the Windy City to the beef in May with the Chicago Burger. A plethora of condiments including American cheese, sweet relish, banana peppers, onion, tomato, pickle and celery salt get thrown on this sucker. 2121 K Street, NW | DC | bobbysburgerpalace.com  

Dogwood Tavern

Italia comes to Falls Church in burger form at Dogwood as tomato, fresh mozzarella and basil do their red, white and green thing on the beef in the Caprese. 132 West Broad Street | Falls Church | dogwoodtavern.com    (We're always on the lookout for BOTMs. If you know of another D.C.-area joint that hooks up a monthly special burger, email us and let us know.)