What is it about historic D.C. firehouses that spark culinary ambition? A pair of in-the-works restaurants aim to address this burning question. As Express recently reported, a pre-World War II firehouse in the Bloomingdale neighborhood is slated to become an eatery called EC-12, whose name references the old Engine Company 12 that used to occupy the building. Architects are currently working on building plans, after which developers will be able to apply for a building…