Why You Should Buy Olive Oil In Tins Over Glass Bottles - Chowhound

Keeping light away from olive oil is so important because, like most plants and plant-based products, it contains chlorophyll. This pigment that gives plants their greenish color is vital to helping plants produce their own food. But in the case of olive oil, light can activate the chlorophyll in the oil in a process called photooxidation. When the olive oil is exposed to direct light, which can happen if it's in…