For busy staffers on Capitol Hill, whose hectic days are often scheduled down to the minute, grabbing lunch often means a trip to the cafeterias scattered around the Capitol complex.

Although there are multiple dining spots on the campus’s House and Senate sides, offering everything from Indian cuisine to slow-cooked barbecue, some vegetarian and vegan House staffers say there’s a noticeable lack of healthy proteins and lettuce varieties available to fit their dietary needs.

And they’re doing something about it.

Calling themselves the Vegetarian Caucus, these vegetarian and vegan House staffers penned a letter late last month urging Restaurant Associates, the New York-based food service company that runs most of the eateries in the Capitol complex, to add standing proteins and more nutritious greens to the salad bars on the House side, including black beans, spinach, kale and tofu.

“While the salad bar occasionally has black beans, tofu and chickpeas, all good sources of protein, those options are not always reliable or sufficient,” reads the letter, signed by nine House staffers identifying with the Vegetarian Caucus. “We would like to request that tofu, falafel or other substantive, non-animal protein is offered every day as a salad bar option.”