It won't go bad. Those E Tanks of O2 are often in patients homes for years. As long as the valve is closed securely on top. When the tank empties though, you may as well give it back to the provider. Those are expensive and you won't be able to get it filled anyway. They would appreciate...
I brewed this but used Wyeast 1272. Nice clean yeast did it's job. The .5 oz of Citra for the dry hop is just fine. Pulls through that signature aroma with no issues.
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