Wax circles on jam

[Woodsparrow]

I made some jam to enter into my village fair which was at the weekend. No lids allowed, had to be wax circle and cellophane and elastic band. I filled the jar nicely to the top, put the wax circle on top then the cellophane and band, cooled on the bench before putting in the fridge. Yet when I went back to the fridge the wax circle wasn't all neat it had all sunken into the jar.

How do you make it neatly? If I put more jam on the jar it'll over fill and spill down the sides. Where am I going wrong?

Not a jam expert, but surely when you put it in the fridge the jam would cool further and shrink, and also any trapped air would also cool and shrink? This would then pull in the wax circle.
So wouldn't the answer be to only put the circles on after the fridge stage?
(Does it need to go in the fridge at all?)

The pp is correct - jam doesn't go in the fridge unless it's a low sugar recipe or it is very hot. Some of the supermarket stuff has a lower sugar content and has to be kept in the fridge once opened to stop it going mouldy.

Sorry - that should say "or the ambient temperature is very hot".

Ah I see thank you very much. Won't put in the fridge next time!