On that blog, they are called 7 -Up Biscuits because you use 7-Up in the recipe. I'm not a fan of 7-Up, so I substituted Sprite and it came out great. Some of the comments on that blog also say not to use diet 7-Up, as it doesn't taste as good. I also found my dough just a little sticky, but more comments on that site said to add more Bisquick to remedy that. I also used a 4-inch drinking glass as my biscuit cutter, but I think next time I will use a smaller size. I was only able to get 8 biscuits to fit since my dish was 8 inches, not 9.
2 cups Bisquick Baking Mix
1/2 cup sour cream
1/2 cup 7-Up (or Sprite)
1/4 cup melted butter
Cut the sour cream into the biscuit mix, add the 7-Up and mix very well. This makes a soft dough. Sprinkle additional biscuit mix on the board or table and pat dough out. Melt the butter in a 9-inch square pan. Place the biscuits in the pan and bake at 450°f until golden brown, about 12-15 minutes.