MilkShake Factory Brings Nostalgia & Flavor to Avon In 1914, a family of immigrants from Greece settled in Pittsburgh and opened their first chocolate shop and soda foundation. At the time, a milkshake was seen as a luxury. Few had home refrigeration, and a trip to the soda fountain was a special treat. By the 1950s, new generations were joining the family business, and by the early ’70s, the family opened their first chocolate factory, putting a special touch on the product by...