How can I determine the final ABV following bottling? Is there a formula to do so? I've been calculating ABV by taking OG prior to pitching yeast and then FG following fermentation in fermenter and hadn't realised that there could be a significant impact on ABV from priming in the bottle. For example, OG of 1.047, FG in fermenter of 1.013 and then 1.008 after a few weeks in bottle. For this ale it means a true ABV of 5.1% and not 4.5%. Any help and advice greatly appreciated!