i recently brewed a batch of birch brown ale, using 5 gallons of birch sap for the mash water and adding 2 cups of birch syrup at flameout. now i'm considering priming with birch syrup as well, but can't find any references as to how much to use. the syrup i have is the very last amount to come out when they clean the evaporator, so it is a bit watered down. but i do know that it is 23 brix. using a priming calculator for maple syrup(~66brix) and a desired CO2 saturation of 4.2, it says 4.88ounces. so i did the math and figured out to get the same desired CO2 saturation with a syrup of 23brix, it works out to ~14oz.

as far as i can tell, this is correct, but was wondering if anyone has any experiance with something like this, or has any other input? the other thing that i'm not sure if i should worry about is the fact that maple syrup is mostly sucrose, while birch syrup is fructose and glucose...does that matter? Thanks!