Using a two cup liquid measuring spoon, add the apple cider vinegar, molasses, honey, and ginger.
Whisk these together until combined and the ginger dissolved.
Pour this into a half gallon mason jar or pitcher.
If you'd like to use lemons, wash, slice, and seed one lemon. Add this to the mason jar.
If you want to drink this with club soda and you are serving a large crowd, add two quarts of club soda to the mixture and stir gently, serve over ice.
If you don't want a fizzy version, pour in two cups of cold water and stir until well combined. Serve over ice. Even better if you make it the day before you'll need it.
Another option is to make the vinegar, molasses, honey, and ginger mixture along with the lemons, and keep it in the fridge. Then as you want a glass here or there, you can make individual servings.
A final option is to add a half cup of oats to the completed recipe. They will sink to the bottom after a few minutes.