Not all milk works equally for cheesemaking. The key factor is whether it’s been homogenized — the industrial process that breaks apart fat globules so cream doesn’t rise. Those fractured fat molecules don’t curd the same way, leaving curds softer and harder to press.
What to look for
- Choose milk labeled “vat pasteurized” or “low-heat pasteurized” — these preserve the proteins that make good curds.
- Avoid anything labeled “ultra-pasteurized” or “UHT” — that heat denatures proteins and makes cheesemaking frustrating or impossible.
- Non-homogenized whole milk from a local dairy or co-op gives noticeably firmer curds.
One gallon of good milk yields roughly one pound of firm cheese. One gallon of ultra-pasteurized milk yields mostly frustration.