The Real Reason Cheese is Yellow

Cheese is made of milk, which is white, but many of our cheeses are shades of yellow passing into orange. Cow's milk contains beta carotene from the grass they eat, which is orange. The real question should be why milk is white in the first place. We really should qualify the assertion by saying cheese made from high quality milk from grass-fed cows is yellow-orange, but cheesemakers have found a way around the question of color (and quality) by making cheese any color they want. People expect a yellowish or orangish cheese, so that's what they will get, one way or another. This video contains a 70-second skippable promotion at 1:05. (via Laughing Squid)