SHEBOYGAN, Wis. — In Sheboygan, the Johnston's Bakery pastry cases are filled with sweet treats, and the shelves are stocked with fresh breads. We've been a bakery since 1950," said Mike Perl, plant manager at Johnston's Bakery. I'm the fourth generation of Johnston's Bakery. Mikenzie Hammel, TMJ4To celebrate the milestone, the bakery offered donuts for 75 cents each in honor of its 75 years in business. Watch: Johnston's Bakery celebrates 75 years in SheboyganSheboygan staple celebrates 75th anniversaryWhen asked about the key to the bakery's longevity, multiple factors emerged.