So these bottes have been stored since bottling on the 25 August 2021 at temperatures ranging from 25C to 2C. The last three four weeks or so they were brought back into the house which is ~18C. Fridged for the last week since the 2nd Jan 2022 and opened on the 8th Jan 2022. 4.5month since they were bottled. 137 days in total.
I've got to start out and say for 4.5 months all of these beers are extremely drinkable if you take the flavour in isolation.
Over-filled Brown bottle 500ml -
The smell surprised me that there was so much hop presence however it also surprised me to see it was the darkest of all of the variables. Flavour has most definitely and expectedly dulled, there may be some undertones of sherry like oxidation coming in however you can still taste the hops and it's not 100 miles away from how it originally tasted.
Over-filled Grolsch bottle 450ml -
Pop goes the weasel. This one burst open in comparison leading me to again to believe the seals on the brown bottles aren't the best (they will be changed). The smell of this one was big hit of hops like it hasn't been stored at all. Colour was the brightest of all of the variables. However, I don't know if it was the increased carbonation but the hop profile seemed to be mellowed. Even in comparison to the darkest one (brown overfilled).
Normal filled Brown bottle 500ml -
I have no idea what happened here. Shocked me to be honest. The pour was near 100% flat but the colour was lighter than the overfilled bottle. As it tasted like a flat and dulled version of bottle the overfilled version and as I didn't pour all the beer our the bottle I resealed it swirled and there was carbonation in the bottle
no idea what happened (I know the swirl would have introduced yeast back in and changed the flavour however I tried it before I did that). Taste wise as it was flat and it was most definitely the worst of all the variables, it had lost more hop flavour and smell than that of the overfilled despite being lighter and less carbonated. Strangely as I was expecting this one to be the darkest this was the second lightest bottle.
Normal filled Grolsch bottle 450ml -
Carbonation was equal of that of the overfilled version "pop goes the weasel". Actually again another surprise the hop smell from the crack of the bottle was the most prominent of the lot. Second darkest variable (where I expected it to be). Equally as mellow as it's overfilled counterpart. Knew there we hops but the prickly carbonation seemed to be masking it.
Not much of a Conclusion
All showing signs of oxidation in some form or another to varying degrees but not having the huge impact I would expect. Which has left me confused as what I'm seeing isn't a correlation between colour, hop presence retainment and flavour loss. Yes the darker coloured beer had oxidised sherry undertones but the smell and flavour of hops was more pronounced than that of the lighter underfilled version. Some variables could be influenced by container size and colour, overfilll or regular fill but also seal strength etc. I'm struggling to draw conclusions from this one. However it's left me open to revisit other things. Despite all this for bottles of beer treated so badly they weren't undrinkable at all.
What I believe I can draw from this as well all already knew Grolsch Bottles are awesome. I think if we use these bottles as a reference due to the consistency of these bottles in terms of colour of beer and carbonation throughout, they have been much better than the brown home-brew-shop ones. The filling high has made the colour stay brighter than its counterpart, but in terms of flavour I do believe there has been some degradation in both these versions albeit not as much as I was expecting. I will continue to overfill on these styles (and change seals on the other bottles). I also think I'll try reduce kette temp ~93C and possibly try SMB again and ascorbic acid in the future.
We will succeed and learn from past failures in an attempt to make bottling hazy possible
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