(WXYZ) - A long-time Detroit staple is celebrating a 100 year anniversary and it means free bumpy cake for you!
Sanders is celebrating the Bumpy Cake's birthday and today you can head to any of the metro Detroit locations to get a free slice of chocolate Bumpy Cake.
Sanders started making the chocolate layer cake with butter-cream piping on top back in 1913.
It was named "Bumpy Cake" after customers started asking for the cake with the bumps.
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