ERIC PRUM and JOSH WILLIAMS have been best friends since they were freshman roommates at UVA. A decade later, they are founding partners in W&P Design, a product innovation company launched in 2012 with a Kickstarter campaign to manufacture a Mason jar cocktail shaker.

They are guest cocktail contributors for marthastewart.com and have been featured in the New York Times, Martha Stewart, Southern Living, Food & Wine, and on CNN among other media outlets.