Hi All I just cracked open a couple of bottles of It's a Trapp ag recipe from MM only to find no crack absolutely flat as flat can be. Brew digidn't quite go as expected bit low on original gravity 1090 instead of 1.105 fermented as instructed at 21 and raise to 27 fermentation finished at 1021 instead of 1015 making about Abv of about 9%instead of expected about 11% . I batch primed 18l with 130g of dextrose and left for 2 weeks at 27% then 1 week at 20%. It's been in the cool for a couple of weeks. I can only think the yeast died incidentally I used wyeast Belgian high gravity. Has anyone got any ideas how to rescue this one. Thank you in advance.