The Olive Oil Trick To Stop Leftover Pesto From Turning Brown - Chowhound

While it's best to avoid adding oil to pasta water, it can make or break your pasta sauce — particularly pesto. The savory green stuff is sensitive to oxygen, changing color as it comes into contact with the air. However, storing pesto in an airtight container isn't enough on its own. That's where oil comes in. Advertisement To stop it from browning, pour a thin layer of olive oil over the top of leftover pesto.…