Gads Gus,
What an interesting conversation. I just looked up the carbs in 1 cup of acid whey and FatSecret says: 12.6g carbs which to me means yogurt made with 40% heavy cream and your Fairlife milk minus the carbs in the liquid (acid) whey it would make the yogurt nearly carb-free. https://www.fatsecret.com/calories-nutrition/usda/whey-(acid-fluid)
WooHoo, who knew, and thank you. Just goes to show you CAN teach an old dog a new trick. I think, in the very near future I will redo the recipe to reflect the new figures. Now that I know about the Fairlife milk, it appears to be everywhere and readily available and maybe this would get more people to make their own yogurt. If you go down to the bottom of my recipe for ½ gallon of yogurt http://low-carb-scams.mouthy.org/low-carb-%c2%bd-gallon-real-lchf-greek-yogurt/ you will see I now make it with a Sous Vide Stick and it is so much easier that the way I made it for years. There is also a picture of the liquid whey I strain out.
Thank you again.

I use yogurt as a complete meal replacement sometimes so with the extra fat and protein, 1 cup fills me up for hours. I was diagnosed with type 2 diabetes over a year ago and eating low carb has allowed my BS and A1C to return to normal however I have almost no appetite so I have to force myself to eat sometimes and yogurt is a good fit. I probably strain more whey out (by pressing) which results in a very thick yogurt and since whey contains most of the carbs, my yogurt is even lower in carbs. I would love to know if you come up with the same nutritional info if you try it.

No Gus,
You did not misunderstand. That is what mine is, using Horizon organic regular whole milk. Apparently you are using a much lower carb cold filtered 3.25% milk I have found the Fairlife milk at a Safeway close to where I live and will now begin using it. I have to say I have never had any trouble with spiking my blood sugar and I could not, in my dreams, eat 1 cup of my own yogurt as it is far too rich. Thanks for the tip using the Fairlife.
One other thing I would add is that you should only be adding 4 packages of yogurt starter. One of the things yogurt does not like is to be crowded with too much starter. Try using 4 packages and see how it works for you.

I guess I misunderstood. I thought yours was 4 carbs for 1/4 cup.

Hey Gus,
My figures are not so far off than yours and I have never heard of cold filtered or Fairlife milk. I have now read about it and it is quite interesting. I do not drink milk and if a recipe calls for it, I just add water to my 40% heavy cream.