Infection and how to remove

[Elliott 22]

Just a long shot here, do you use a temp controlled brew "fridge" ?

Not in a brew fridge no
But keep temps within yeast strain and have a heater to keep stable temp + after first 24hrs I keep at 10psi pressure fermentation as to stop off flavours

 

[foxy]

I did and the blow off tube was attached to the spunding valve was new

feel I’m spinning my wheels
Last clean for 6 hours and was all of my kegs and fermenters and all attachments apart from mable jumper cable although may have done that too

Did you strip the spunding valve?

 

[Elliott 22]

Did you strip the spunding valve?

Yup and I bought a new one
+ the new one is on for this new brew

 

[Elliott 22]

This is the pilsner that’s developing the off flavours

 

[foxy]

Not in a brew fridge no
But keep temps within yeast strain and have a heater to keep stable temp + after first 24hrs I keep at 10psi pressure fermentation as to stop off flavours

How does setting the pressure at 10 PSI stop off flavours? A fermenting wort expels more than just co2, you can include hydrogen sulphide, mercaptans and other impurities , if you must use pressure then use it 48-60 hours after adding the yeast.

 

[Elliott 22]

How does setting the pressure at 10 PSI stop off flavours? A fermenting wort expels more than just co2, you can include hydrogen sulphide, mercaptans and other impurities , if you must use pressure then use it 48-60 hours after adding the yeast.

I mean off flavours from temp swing and esters from the yeast

I see I did only put under pressure on the last batch after 48hrs the one still fermenting, in fermzilla now

but the one before was after 24hrs and had no off flavours at all whentransferring

 

[phildo79]

Probably already mentioned but throw away everything that is easily replaceable like tubing, o rings, JG fittings and disconnects. Even the line from your co2 tank.

Then fill your cornies and fv with water and add thin bleach. Leave them to soak for a couple of hours.

This worked for me. Nothing more annoying than pouring a batch down the drain, let alone 5 or 6 batches.

 

[fgoulding]

Probably already mentioned but throw away everything that is easily replaceable like tubing, o rings, JG fittings and disconnects. Even the line from your co2 tank.

Then fill your cornies and fv with water and add thin bleach. Leave them to soak for a couple of hours.

This worked for me. Nothing more annoying than pouring a batch down the drain, let alone 5 or 6 batches.

I did something the same. In fact, I now use a new dip tube after 3 brews.

I also dismantle everything (carbonation caps etc) after each brew and put them in the dishwasher.

Then I use PBW with hot water with my bucket blaster keg cleaner for 15mins before rinsing.

Also, I've stopped using my thermowell and Float/iSpindel's. The fewer variables the better.

 

[samale]

I had a few batches that went down the drain recently. I put this down to yeast stress due to the hot weather spell we had. I only have one brew fridge.
Normally living in Ireland we don't get high 20s that often. I could pick the smell up after fermentation. The finished beer for me has a very sharp bite. Hop flavour and aroma is over powered.
I would look at your process. Go back to basics and brew a beer and use a standard fermentor ( bucket ).

 

[Cheyne_brewer]

Are you sure it’s not just that that’s what the beer tastes like when you are being critical (like a beer judge, not just moaning…). An infection is highly unlikely to produce the flavours you describe. The hop bitterness is picked up towards the back of the tongue and sweetness towards the front. Normally you’d drink without noticing the separate flavours as your brain stitches them together into a whole. Critical tasting picks the components apart just as you describe. You think you have a problem so you taste critically and there it is!

My AG Pilsner has a nice rounded sweetness to it and a moderate bitterness on the back of the tongue. It’s not infected, that’s the flavour profile.

 

[Leon103]

If everything is clean and new ad suggested then it's not an infection. Send out a couple of beers out and see what others think.

 

[Binkei Huckaback]

Brew again and bottle some (even if only in PET bottles). If the taste doesn't persist, you know it's you dispense set up.

 

[Elliott 22]

Brew again and bottle some (even if only in PET bottles). If the taste doesn't persist, you know it's you dispense set up.

Will do @Binkei Huckaback

 

[Elliott 22]

Probably already mentioned but throw away everything that is easily replaceable like tubing, o rings, JG fittings and disconnects. Even the line from your co2 tank.

Then fill your cornies and fv with water and add thin bleach. Leave them to soak for a couple of hours.

This worked for me. Nothing more annoying than pouring a batch down the drain, let alone 5 or 6 batches.

Think this may be the only option thanks @phildo79

 

[Elliott 22]

Are you sure it’s not just that that’s what the beer tastes like when you are being critical (like a beer judge, not just moaning…). An infection is highly unlikely to produce the flavours you describe. The hop bitterness is picked up towards the back of the tongue and sweetness towards the front. Normally you’d drink without noticing the separate flavours as your brain stitches them together into a whole. Critical tasting picks the components apart just as you describe. You think you have a problem so you taste critically and there it is!

My AG Pilsner has a nice rounded sweetness to it and a moderate bitterness on the back of the tongue. It’s not infected, that’s the flavour profile.

I am certain had friends try and they can pick it up, almost no hop flavour or smell at all now and had a decent dry hop, just sharp overly bitter and no aroma.

when I tried it before I transferred felt it tasted on the money & since using old jumper cable feel that may of had the infection in in to new keg with freshly cleaned taps which had been cleaned with beerline cleaner, thoroughly rinsed and sanitised with chemsan

 

[Elliott 22]

I did something the same. In fact, I now use a new dip tube after 3 brews.

I also dismantle everything (carbonation caps etc) after each brew and put them in the dishwasher.

Then I use PBW with hot water with my bucket blaster keg cleaner for 15mins before rinsing.

Also, I've stopped using my thermowell and Float/iSpindel's. The fewer variables the better.

Pretty much what I have been doing except I use chemclean and the carbonation caps I can run my keg cleaner through them
But like the idea of dishwasher for them

 

[The Baron]

When you say you have friends taste it and they detect it are you pointing them toward the off taste because they will taste it if you subconsciously implant it in there mind. I would just give them a beer on your next brew and say nothing more than what it is and lets see if they spot anything also send some bottles out 3 or 4 brewers and they will critique it for you

 

[Leon103]

When you say you have friends taste it and they detect it are you pointing them toward the off taste because they will taste it if you subconsciously implant it in there mind. I would just give them a beer on your next brew and say nothing more than what it is and lets see if they spot anything also send some bottles out 3 or 4 brewers and they will critique it for you

Agree with this. I think this issue is more brewing process than infection.

 

[Elliott 22]

When you say you have friends taste it and they detect it are you pointing them toward the off taste because they will taste it if you subconsciously implant it in there mind. I would just give them a beer on your next brew and say nothing more than what it is and lets see if they spot anything also send some bottles out 3 or 4 brewers and they will critique it for you

They are a fellow brewer and I did not lead them just asked what they thought

I will defo send some out for feed back many thanks

 

[Elliott 22]

Agree with this. I think this issue is more brewing process than infection.

My process hasn’t changed since pressure fermenting
Fist few beers were good apart from failing to properly clean reconditioned kegs.

so can’t see what I’mdoing wrong