Enjoy locally produced craftsmanship enriched with joy and patience! Grenna Polkagriskokeri bakes genuine Gränna polkagrisar according to the original recipe from the mother of pepparmint rock candy, Amalia Erikson. The family-run Grenna Polkagriskokeri on Brahegatan is one of the larger factories and shops in Gränna. Here, the shelves are filled from floor to ceiling with polkagris sticks, caramels, lollipops, and toffees.