1/2 Gallon Water
4 Ounces Molasses (Can also use Honey)
2 Ounces Apple Cider Vinegar
1 Tablespoon Ground Dried Ginger
Although there were different variations all of these ingredients were available and are historically accurate for both 18th century and 19th century interpretations. I usually mix as follows:
- Start with 8 oz hot water.
- Add the Molasses, Vinegar, and Ginger.
- Add to 7 cups of cold water. (8 cups = 1/2 gallon)
Variations 
Some folks like more Ginger and vinegar added.  Some also add a pinch of Cayenne pepper. You can also add Lemon Juice or Lime Juice. You can also try Honey instead of Molasses or try a 50/50 mix of the two.   If you want to kick it up a notch, you can also some rum to make an adult version. 
If you'd like a walk through, there's a great video from J.A.S. Townsend. 


 
 






