This keto gravy serves 8 and contains 0 net carbs per serving.
If the gravy does not thicken, add 1/4 tsp of xanthan gum and stir till it thickens. Only use a small amount at a time because a little goes a long way.
If you add too much xanthan gum, add a little more broth to thin it out.
Start with 1/8 tsp of salt and add more as you need. This is because the broth might already contain salt.
In the absence of any kind of broth, you can use bouillon cubes to make broth. To make a cup of broth, mix one bouillon cube and one cup of boiling water. This might be saltier, so don't add any other salt.