The ButterUp butter knife has a built-in grater to make cold butter easier to spread
The ButterUp has a row of holes along the non-serrated edge of the knife
According to DM Initiatives, the grater aerates and softens the butter
A variety of similar prototypes were test before the ButterUp design was finalized
Many a sandwich has been ruined by overzealous buttering with fridge-cold butter. The anguish of torn bread may now be a thing of the past, though, thanks to a newly-designed butter knife. The ButterUp knife has a built-in grater to soften butter for spreading.
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