Photo from The Mountain Advocate - September 5, 1913 - Basting the Roasting Meat.
The Evening Public Ledger of October 20, 1920 printed an article written by Mrs. M.A. Wilson entitled Mrs. Wilson Describes an Olden Kansas Barbecue.
In the article she shared this old Kansas City Barbecue Basting/Mop recipe.
1/2 cup of bacon fat
7 TBS of vinegar
1 Tsp of sugar
3 TBS of grated onion
Tiny bit of garlic
Add to 2/3 cup of boiling water and mix well. Keep liquid warm and baste the meat with the liquid as the meat is being barbecued.
If you try it, you may have to scale it up a bit.