I worked in a small town diner in Clearlake Oaks CA. 27 years ago. The cook made phenomenal biscuts and gravy. She used bisquik and water patted them out and baked 'em and they were about 4 inches high.The best biscuts I ever had. I learned how to flip eggs in a pan then and how to make the gravy, but never could get my biscuts to turn out the same.
I still use bisquik today mostly for pancakes or dumplings and occasionally, I still try to get those biscuts that tall.