Feel free to use any sugar-free hot beverage of your choice or none at all.
Some common keto-friendly favorites are bone broth and herbal tea. You can even blend either one up with a keto-friendly sweetener and fats of your choice (e.g., MCTs, coconut oil, butter, and/or heavy cream) if you’d like.
If you need a way to get some extra fats in the morning, consider drinking a keto smoothie or milkshake instead: