Is this the extract "twang"?

Tasting a hefeweizen tonight brewed with 2 cans of Munton's wheat LME and WLP300, and definitely getting an off taste. All the yeasty flavors came through just great, but there's a bad aftertaste right after you swallow that's hard to describe. It reminds me of a similar taste all of my old Mr. Beer batches used to have (at least all the lighter ones). I almost want to call it "soapy" but I don't think cleaning/sanitation is an issue here as none of my other beers have had this taste and I use the same process/equipment. "Wet cardboard" isn't exactly what I would call it but it wouldn't be too far off...
Is this the infamous extract twang I have read so much about? I usually use mostly DME and the last wheat I brewed I used Briess LME. Anyone else have problems with the Munton's cans, and would you agree that's probably the culprit here?

How long has it conditioned so far? It could very well be the twang

Only been in the bottle about 10 days. I don't have a lot of experience with hefeweizens but have read it's normal to drink them pretty early. Think it could just be a "green beer" taste that would go away? That would be nice...

To combat extract "twang" I start with a bit of DME (1-2 lbs) then add the LME in the last 20 mins of the boil.
However, what you're talking about almost sounds like it was sunstruck. I have a problem with that in the summer if I forget to cover my beer.

Don't blame the extract. It is the metal can it came in. Briess does not come in a metal can. Fresh pineapple versus canned pineapple, for example.

Forrest

Austinhomebrew said:

Don't blame the extract. It is the metal can it came in. Briess does not come in a metal can. Fresh pineapple versus canned pineapple, for example.

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Hmmm... Good point! Would explain why I haven't tasted it since I made those Mr. Beer batches out of a can so long ago. I think the only other time I've used canned extract since then was for a stout, where it was probably better hidden, although there was a slight off flavor I wasn't able to identify...

Brewratt said:

To combat extract "twang" I start with a bit of DME (1-2 lbs) then add the LME in the last 20 mins of the boil.
However, what you're talking about almost sounds like it was sunstruck. I have a problem with that in the summer if I forget to cover my beer.

Click to expand...

Yeah this one was only LME but I did one can at the beginning and one can at the end of the boil. Definitely didn't get any sun anywhere near it, it was in a plastic bucket straight to brown bottles.

No visible liner on the inside of the can as far as I can remember. Yeah I definitely would have gone with a small amount of DME for the beginning of the boil, but my local health food store where I get most supplies doesn't have wheat DME so all I had was the Muntons cans to work with, without driving an extra hour to the not so local HBS. I'll probably just avoid the Muntons cans in general and stick with their DME or fresher LME from online stores.

Cool, might try that - thanks!