Comment by cauterized

I've had a similar experience. I think the organics companies just clean their equipment/tanks better or something. Regular milk with an expiration date 3 weeks in the future often turns sour within 3 days of opening, despite refrigeration. Whereas organic milk with the same expiration date, from the same shelf in the same store, will last a week and a half. And there's really nothing inherent about organic milk that should make it last longer.