The best product mashups multiply what people already love. A soda trend shows up online: People start mixing Sprite with iced tea. Not as a stunt, but because they love the combo. Then eventually, Sprite + Tea becomes an actual product on shelves in the U.S. and Canada. What started as a hack becomes a SKU. We’ve seen this pattern more and more. Trader Joe’s turns lasagna soup into a product after the idea circulates in recipe pages. Fast food chains package pop culture moments into menu...