Hi @amidn, Welcome to Connect. I think anything without sugar or sweeteners, calories or carbs is OK during a fast. Here's a good list of stuff to avoid and stuff that is OK - https://fastingwell.com/drinks-while-fasting/. I drink black coffee and various herbal teas, including peppermint.

I found that using an app on my phone made it easier to track my intermittent fasting. Do you use an app on your mobile device to track the fasting time?