
What can I do to keep my homemade pesto from turning black?
It's Sunday morning and you've decided to treat your family to some delicious gnocchi with pesto sauce. You select the ingredients, crush the pine nuts, grate the Parmesan cheese and mix the fragrant basil leaves with a good drizzle of olive oil. The sauce is ready: green, vibrant, perfect. But time passes. An hour later, it's time to serve. Everyone is...