This article needs additional citations for verification. (December 2016)
Founded in 1922, Shamrock Farms is the largest family-owned and operated dairy in the Southwest. It produces and distributes a full line of dairy products. It is owned by the McClelland family.
Shamrock Farms was founded in 1922 in Arizona by Irish immigrant W.T. McCleland (1892-1968). He and his wife would deliver milk on a Ford Model T truck. In 1933, Shamrock Farms started utilizing milking machines. In 1951, it acquired its first refrigerated truck.  By 1967, it became the biggest dairy company in Arizona.
Mmmmilk is a well known milk brand distributed by Shamrock Farms in the Southwestern United States. The milk brand is produced in Arizona. Shamrock Farms sponsors the Arizona Diamondbacks, and some of their bottles have featured Diamondback players such as Mark Grace and Luis Gonzalez. Shamrock Foods also provides commercial foodservice.
Shamrock Mmmmilks are made in the following flavors:
- Whole White
- 2% Reduced Fat White
- 1% Low Fat White
- Fat Free Plus Calcium White
- Vanilla (2%)
- Chocolate (2%, Whole)
- Strawberry (2%)
- No Sugar Added 1% Chocolate
- Orange Cream
Cold Brew Coffee and Milk:
- * Nunes, Keith (October 29, 2008). "Shamrock Farms extends 'mmmmilk' line nationally". Food Business News Magazine. Archived from the original on 2016-03-04. Retrieved November 15, 2012.
- Shamrock Farms website