I have run my first two 5 gallon batches that came out 95 and 90 proof respectively. I read online how to use carbon filtration with the long
pvc tube as described above and followed the directions exactly. The resulting brew was very smooth at first, but had a lingering after-taste. I'm thinking that the taste is from the black rubber seal on my valved reflux still. Where can I find food grade rubber to make a
gasket?