Soft drinks and Beer was sold in returnable bottles until sometime in the late 1970's.
The bottling companies would take the returnables back, wash them and then wash again with lye water, then rinse. All of this was done with the bottle upside down on a washing conveyor.
Then the bottle was refilled. You haven't had good commercial drink until you have had one that has been bottled and kept under refridgeration until drank.
If you an find you some old soft drink or beer bottles, don't let them out of your control.