You may wonder after inspecting the date on your milk carton just how long milk is still good after the expiration date. Usually it is just a few days past the date. In some cases, such as with organic milk, milk can last weeks past the date. So, how can you tell? Two good indicators are how it smells, and the consistency. If milk thickens, it is on its way out. If it smells off, it’s probably spoiled or about to sour. If in doubt, throw it out. For more information look at this website.