I bought quite a few molds at J.B. Prince (I like their selection, prices and customer service). Here's the insert that arrives with the molds:
Has anyone else tried putting moulds in the dishwasher with no ill effects? I had heard the warnings about not putting them in, and someone else told me it was fine to dishwash them. So I tried it, works great, chocolates come out better. Has anyone else tried it or are we all following someone else? Maybe the myth needs to be busted.
These chocolate molds are made from food safe rigid polycarbonate plastic. They are durable, will not bend, and have highly detailed designs.
Before use, these molds should be carefully cleaned in warm or hot water with mild soap. DO NOT USE A DETERGENT OR SOAP THAT CONTAINS ABRASIVES.
It is possible to put these molds in a dishwasher – even a commercial one, BUT DO NOT USE DISHWASHER DETERGENT. It contains abrasives that will scratch the plastic.
After washing, the molds can be dried with a soft, lint free cloth or cotton balls.
Thank you for buying from the J.B. Prince Company.
So what do I think? I like to have clean molds when I start a production run, so I do wash them in the dishwasher: top rack, a tiny bit of dish washing liquid (NO DETERGENT), AND NO HEATED DRYING. When the washing cycle finishes, you can dunk them in distilled water to prevent dissolved minerals in the tap water from drying and leaving a film. (If you live in Paris, you need to do this! The mileage at your location may vary.)
My chocolates come out with an unbelievable shine (someone once told me that it just doesn't look natural for chocolate to look that shiny…) and I get close to zero duds. Occasionally I have to chill a tray for a few minutes to help contract the chocolate a bit more, but the finish is still excellent. Do not chill in the freezer as this can cause the chocolate to fracture and ruin the surface.