you need to mix vinegar and fresh bleach
with cold water (of which the fumes can
actually kill you as well)
All the results I can find on Google for "bleach vinegar" say "Do not do this, chlorine gas is poison" - where can I learn more about how to do it properly, and why it works?
Essentially, you use the vinegar to adjust the pH of the water to the correct level - 8.0 - to get the right effect from the bleach (chlorine). Again, I have to stress what I said in my first post, that this _can be deadly for you_ if you don't use it correctly.
Charlie is the inventor of Star San, a sanitizing solution used in breweries and by homebrewers. Which should make you skeptical, but don't be. He's essentially an expert who made a fantastic product, and only wants to help. In the podcast he outlines how to use normal household products as replacements for his products.
I haven't listened to it since 2012 or so, so if I am mistaken about the source, please let me know and I'll find the correct source of the information in my original post.