I’m nearing the end of my very first batch of wine. It’s completely fermented, cleared and ready to stabilize and sweeten. I used frozen white grape concentrate for my first try to keep cost down and would like to back sweeten with some more frozen concentrate to add some flavor back into it. Starting gravity was 1.095 and ended at .990, so 12-13% alcohol and it’s a 6 gallon batch. Is there a calculator to determine how much sugar it will take to make it a semi sweet wine? I know I can just add until I get the desired sweetness but I’m trying to figure out how many cans of concentrate to buy. Each can of concentrate contains 36g of sugar. Thanks