In alt.home.repair, on Thu, 20 Jul 2017 15:44:02 GMT, Babydollbolt
m wrote:

replying to PE, Babydollbolt wrote:
After going thru 30 loaves of all kinds of bread, without success, I decided
ti try Just for Copper. More then ten years later still no leaks! This
repair involved multiple joints, including shut off valves.. I have been
told by numerous people about the bread trick, but they all have one thing in
common-none of them have ever tried it themselves. THE BREAD TRICK DOES NOT
WORK!

It depends what you're trying to do, but since you're a web poster, of
course you don't provide any context.

IIRC, I used it once and it worked for me.