General Question

sfgal's avatar

why does the pesto made from purple basil turn green?

Asked by sfgal (280points) June 5th, 2007
i made pesto from purple basil, thinking it would be a lovely purple pesto. I put it in the fridge overnight, and in the morning, voila! I had dark green pesto! Why?
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2 Answers

nomtastic's avatar
oxidization? (like rust on yr pesto.)
occ's avatar

apparently if you "seal" it with olive oil, it will prevent it from oxidizing and you will have your purple pesto. or, serve right after you make it and it will still be purple.

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