I could not find anything on this after a couple of searches so I apologize if this question is somewhere. The first morning meal allows milk with coffee or tea and I don't use milk in my tea. I wonder if it would be okay to use a little sour cream in a taco salad I make.
I asked once about a little bit of fat free plain yogurt in place of the milk and was told no. The milk has to be skim milk and according to my coach you can't substitute it with anything else. Sometimes different coaches will have different takes on things so it is worth asking at your next WI but as far as I know you can't sub in other dairy products