When it comes to comfort food, few sandwiches can beat the ooey, gooey deliciousness of an expertly made grilled cheese. But what makes the perfect grilled cheese sandwich? The answer, of course, is rather subjective: While some folks like nothing more than a fresh slice of tomato to add a little acid to their 'wich, others consider any ingredient other than cheese an abomination. To find an answer—or at least some semblance of one—we went to the experts: A cheesemonger, a food scientist, a professional chef, and a super-trio of grilled cheese-loving kids.

Kids Vs. Science is a new show from Mental Floss where we challenge a team of experts to complete a seemingly simple task—and compete against a group of kids to see who emerges victorious. Who will make the ultimate grilled cheese? Watch the full episode below to find out.

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