Dairy Chemist Question:

The taste of milk, regardless of whether it is organically or conventionally produced, can differ slightly from carton to carton and season to season. Factors that may impact taste include location of the farm, breed of the cow, variations in cows' feed from farm to farm, and even the time of year. Milk that is ultra-high temperature pasteurized for longer freshness may have a slightly different taste. People should do their own "taste test" to see what type of milk they prefer.