Simple Question

[JeffoC6]

What would be the main reason for this problem:

If at bottling, your beer tastes very very good. Then, after 3 weeks of bottle conditioning at 70* (for an IPA, wheat or any other beer that should be drank "young") the beer tastes a bit twangy, sour on the tongue, and a little metallic.

Thanks...

 

[abarhan]

Could have gotten an infection with your bottling set up. The metallic taste can be rough to nail down 100% but can be related to an alum kettle. I would say it was some left over gunk somewhere in the bottling process+ oxidation. Any more details?

 

[amandabab]

How are you washing your bottles?
Are you trusting a dishwasher to sanitize them?

 

[RuffRider]

A couple questions come to mind.

How many have you tried? More than 1 bottle? You may be able to nail it down to your bottles if you find one that tastes as you expect to.

Did you sanitize your caps? How is your bottling bucket? Sanitized? Clean and scratch free?

This could be tough to nail down. IMHO, if the entire batch (every bottle) seems infected and soured, then it's probably not your bottles. That's assuming of course that you made a decent effort to sanitize them. That leaves your bottle caps, bottle filler, tubing, and bottling bucket as potential sources. How clean is that valve on your bottling bucket? Just some thoughts on POSSIBILITIES for you.