[quote=“SA Brew”]As I mentioned in a previous post, I used plastic wrap on a carboy to let oxygen in and keep the dust and insects out. This worked great for getting some acetic character and not having to dedicate extra equipment to sours only.
I was talking about the color of the beer in the pyrex measuring containers in front of the carboys. These are easy to sanitize and use as blending vessels as you taste and come up with your final product.
Many of my experienced brewing friends gave up on air locks a long time ago. Most of us just sanitize a piece of aluminum foil and wrap it around the top of the carboys for our regular beers . I would probably put one on a secondary ferment, but usually I just go from primary into the keg. It would be an interesting experiment to see how much oxygen gets in through an airlock over time. I don’t think atmospheric pressure would have a lot of push and pull on a glass carboy. I know the air lock would have some reaction, but I thought the function of the air lock was to keep the blanket of CO2 on the beer and keep the oxygen out. That may explain why I taste so many oxidized barley wines at club meetings.
Have you tried Rodenbach Grand Cru? I think it has a strong acetic character, but it is well balanced by the malt, fruit, and oak character. I find that level of acetic very refreshing. I do like other sour reds that have less, but I find them less complex.
I have been home brewing for 25 years. I am not new to this. I don’t brew sour reds anymore because they take up a lot of space and we get several classic examples in our stores at reasonable prices. When I was making them, I got a lot credibility as a brewer from experienced home and pro-brewers that tasted them. If you don’t like the acetic character of sour reds, that is ok. You can make a reddish colored, wild ale, but I don’t think you can call that a Flander’s Red. Of course Berliner Weiss is sour and does not have an acetic character. I think most sour beers don’t have an acetic character, but it is an important character in Flander’s Red and most lambics. When I post, I try to pass on what has worked for me and encourage those who have asked for help.[/quote]
You need air locks on sours. You will have vinegar if you just use foil for the entire aging process. I’m done with the acetic war. If you like it fine. Just trying to pass on good info to new sour brewers. It should be very minimal in most sours
There is plenty of info out there on bungs, buckets, glass, bb and the oxygen intake of them.