We have a short video that explains what fats you can use.
I actually did a 100-day experiment where I didn’t eat anything BUT Keto Chow and different kinds of fats. The short version is: I like to use butter the best, then heavy cream. You can also use avocado oil, a little MCT oil, even coconut oil if you mix it the same as butter.
So, based on all that, it’s entirely up to you!