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I have recently opened a few brews that were about 5-6 weeks old and they are nearly dead flat and have no head.

What might be causing my beer to be flat?

They are bottled in coopers 740ml pet bottles and were primed with dextrose.

The flavour is ok, but being nearly completly flat makes for an ordinary beer.

Were the lids screwed down tight?

What temps were they stored at?

Cheers,
Greg

They were stored between approx 17c-22c and the lids were brand new and screwed on tightly.

Cheers...

How much dextrose did you use?

This has happened to me and I just opened them all and added some carbonation drops. Wait a week or two and you have fizzy beer.

Worth buying the drops as it works a treat

I suggest warming them up a bit, and rotating the bottles (end over end) once or twice a day. The yeast may just need rousing- lazy buggers!

My first two are out then (was hoping for an easy fix ), try Chris' and if still no joy try the carb drop.

Cheers,
Greg

Thanks guys...

I will give your suggestions a try and hopefully be able to salvage my brew.

cheers...

Yeah I had some of a batch do the same thing, I dropped one drop in each bottle and it worked no worries, you may need to get them pretty cool first or you may have a boil over.

I am Not reccomending the 'Brewcraft' carb drops.

2 batches I did with them got some strange looking shit in the bottles.

Have since experimented and Only the brewcraft primed bottles got the strange film.

It is either an infection or protein film ?


cheers 501

Dunno, I used Coopers drops!

If i'm not mistaken, dextrose takes longer to carb up than normal white sugar.

Adding extra drops may cause too much fizziness, or even bombs.

Try Chris's method, a good stir of each bottle, then be patient for another month or two. Then re-evaluate.

Hello All,

I've used the Coopers Carb Drops and they really do work a treat! No stuffing around with measuring spoons and the like - looking to bulk prime on the next one, just to see the difference! The head on my coopers lager (after using the carb drops) is 'ok'. I say 'ok' because it probably could be better. But the beer is good, and that why we're all here right?

I had the same problem. It turned out that the pet bottles could not hold the pressure. I had used plastic water bottles. Pop bottles work fine,

Regards Guy