Two thoughts:
1) I always clean fermentation tanks and brite tanks with an alkaline wash first, followed by a rinse with water until the discharge reaches a neutral pH, followed by an acid wash.
I clean beerstone/calcium oxalate build up in brewing vessels by inverting than process; I clean using an acid wash, then — without rinsing — immediately use the alkaline cleaner. The Birko chemical site has a detailed description of this procedure.
2) Unless I’m using purée, I flavor our RTDs inline while kegging. It’s a pain, sure. If you are canning, perhaps you could fill cans from kegs.
Or maybe use a fermenter as a unitank dedicated to RTDs!
I hope this helps.
Rob Weaver
The Laird Arcade Brewery
Sent from my iPad
Original Message:
Sent: 6/27/2024 2:27:00 PM
From: Anonymous Member
Subject: Flavour carryover from RTDs
This message was posted by a user wishing to remain anonymous
Hello! I am having trouble cleaning Brite Vessels after filling them with an RTD beverage, and then going back to beer in the same tank. The beer picked up a fruity flavour from the previous RTD.
We have tried cleaning with a chlorine based sanitizer and a PAA sanitizer, thinking that they would act as better deodorizers and work better at de-flavoring over a caustic wash. The RTD has almost no soils, just flavour, vodka and water (no sugar). We have tried soaking the BV with the chlorine based sanitizer as well for several hours, but after leaving water in the bottom overnight you can still taste a fruity flavour in the water the next day. It is like it is leaching out of the tank lining over time. We will be trying a caustic wash next.
Does anyone have a good system for stripping fruity flavours from tanks?
Thank you!