Never scrape cold butter on toast again; We’ve found a knife that makes breakfast effortless. The ButterUp has a built-in grater that creates spreadable ribbons from butter straight out of the fridge. And unlike other items that have niche functions, ButterUp's knife is as useful as any other butter knife for a broad range of tasks. The grater holes in the blade are small enough that they don't affect its use when spreading jams, nut butters and the like, while its serrated edge works just as we