You can use arrowroot aswell.. It does have some carb content but it is not in the scale of cornflour and because the portion sizes are for more than one serving then the arrowroot thickening is negligible
With that gravy I didn't use any xanthan gum. Usually with heavy-cream based gravies you can reduce it and get a nice thick sauce without thickeners. Arrowroot powder is quite high in carbs so I'd personally avoid using that in a keto recipe.
@@RuledMe Yes, it's got a good carb content, the arrowroot but when used in recipes where there are many portions then it's insignificant and produces better results in texture than xanthan gum for most savoury low carb dishes