Ice cream can be traced back to Rome in the 4th century bce. The Roman emperor Nero ordered ice to be brought from the mountains and joined it with fruit toppings. In the 13th century, Marco Polo learned the Chinese way of creating ice and milk concoctions and brought it back to Europe. Over time, recipes for ices, sorbets and milk ices evolved and were served in the hip Italian and French royal courts.
The usage of ice blended with salt to lower and control the temperature of the combination of ingredients established a major breakthrough in the development of ice cream as we understand it. The creation of the wooden pail deep freezer with rotary paddles eased its fabrication. It was a Baltimore company that first created and advertised ice cream wholesale in 1851. The treat became both distributable and lucrative with the introduction of mechanical refrigeration.