While looking at recipes on Newspapers.com, I came across this 1862 recipe, recommended for the aid of sick and wounded civil war soldiers.
"It makes an agreeable and refreshing beverage and those who desire to do something for the aid of the sick and wounded soldiers, cannot prepare anything more acceptable than a quantity of this Raspberry vinegar."
It's not quite raspberry season here in Pa, but we may attempt a batch once it is.
The Shippensburg News
05 Jul 1862, Sat • Page 3