Stonyfield Farm has a "IWillKnowMyFood.com" website, yet if you want to know a bit more about their ingredients (Dutch process chocolate?) you get this reply from "CRelations@stonyfield.com":


Hi,

Thanks so much for your question. We're sorry to tell you that we can't share the information you're looking for. We work closely with our suppliers to ensure that they are providing us with ingredients that meet our values. However, unless there is a specific allergy question, we're not
able to share the exact components of many of our ingredients because they are proprietary to our suppliers.

We hope you understand. Thanks again for reaching out.
Sincerely,
The folks at Stonyfield