Americans have a conflicted relationship with Arby's, the Georgia-based chain of 3,300 sandwich restaurants. The company, known best for its meaty sandwiches (especially roast beef), has been closing U.S. stores since 2008, and is the occasional target of gross-food jokes, like when Jon Stewart called its product "the only food classified as a war crime."

And yet there's nothing else quite like Arby's, which may be one of its great advantages. Only here can you get a spongy pile of paper-thin, warm roast beef on the kind of soft sesame seed roll normally reserved for a hamburger. Unlike sandwich chains like Subway that tout a huge variety of fresh veggies to add on, Arby's classic roast beef sandwich comes unadorned. Just meat and bread, with the option of Arby's sauce or zesty "Horsey" (horseradish) sauce only if you want it — and you can even order it in a drive-thru. The chain is clearly not concerned with vegetables; one of its mottos is "We have the meats."

The lack of abundant fresh veggies doesn't seem to be a problem: Despite struggles in many corners of the fast food business, Arby's has grown same store sales for 21 consecutive quarters — more than five straight years.

In 2015, comparable sales grew by 8.1%, and the average store now makes just over $1 million dollars per year, "the highest in the history of the brand," Arby's CEO Paul Brown told BuzzFeed News.