Look for Heritage-Breed Parmigiano Reggiano here:

(*) Merchant purchases full wheels

Brown Cow:
(*) Cowbell (Portland, OR)
Ditalia (Online)
(*) Foster Sundry (Brooklyn, NY)
(*) Liberty Heights Fresh (Salt Lake City, UT)
(*) Maine Street Meats (Rockport, ME)
(*) Milkfarm (Los Angeles)
(*) Providore (Portland, OR)
(*) Zingerman’s (Ann Arbor, MI)

Red Cow:
ALC Italian Grocery (Brooklyn, NY)
The Cellar and Pantry (Delray Beach, FL)
(*) Cowbell (Portland, OR)
Ditalia (Online)
(*) Son of a Butcher (Birmingham, AL)

White Cow:
ALC Italian Grocery (Brooklyn, NY)
Ditalia (Online)
(*) Eataly (Boston, NYC and Los Angeles)
(*) Son of a Butcher (Birmingham, AL)