OMG - I didn't know anyone else ate chocolate gravy. My MIL used to make chocolate and biscuits for her kids when they were growing up. Out of her 5 kids, I'm the only family member that makes it. When my kids were growing up, that was our Sunday breakfast. Here's the recipe I use:
1 cup sugar
3 level tablespoons cocoa
2 heaping tablespoons flour
2 to 2 1/2 cups milk