Back in 2009, Katie Shelly was craving an eggplant Parmesan. Small problem: She'd never made it before. But she remembered that a college roommate used to make it, so she called her up and asked for the recipe.
The friend told her she needed to start with three bowls — one for breadcrumbs, one for egg and one for flour, salt and pepper. "In that moment, it was totally natural for me to just draw the three bowls instead of writing all that out in words," says Shelly, whose day job is as a visual designer.