Cooks Illustrated tested supermarket brands against the very expensive Callebaut; and the old standby Hershey’s wound up being the winner. This link has the ratings, as well as a lot of info on how cocoa is processed:
https://www.cooksillustrated.com/taste_tests/573-supermarket-cocoa-powder
You’re so smart, Jamestown!
I read that too and went out and bought Hershey’s Dark. I had turned against it because so many of my British food magazines were so down on Hershey’s - they’re actually crazy on the subject - that I assumed it must be horrible. So when Cook’s came up with this test, I felt vindicated and ran out and bought some. I had been using Droste which is wonderful but so expensive.
Do you prefer cocoa to melted c. in your brownies?