I use whey protein powders, the lowest carb one I’ve found is this one:

BioTech USA Iso Whey Zero. It has 1,5 grams of carbs per scoop. I’ve only tried vanilla and it’s pretty good. They also have chocolate and strawberry flavour. 

I have made 3 recipes with it: pancakes, waffles and ice cream. Yes, you read that right. 

Ice cream is really easy: mix 25 g of whey with 200 g of coconut milk. Add flavouring (cocoa, cinnamon or whatever you prefer) or berries. Freeze. Mix every few hours while in the freezer. Or put in a popsickle mold. 

Best pancakes: 2 egg yolks mixed with 25 g of whey and 250 g of ricotta and a bit of baking powder. Then add 2 egg whites whipped to stiff peaks. If you want, add cocoa etc. Fry with coconut oil or butter. Add cream and/or berries if you feel like it. Enjoy!