Daughter gave us a home made Christmas pudding. I cut it up into portions no froze it. Decided to have some tonight. Thawed out two portions. Remembered daughter said cook it in the micro for ten minutes. So. I put them in a plastic box with a lid. Set for 5 mins.
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That could have been the mistake Caran. Moisture in pudding would have evaporated and eventually caused enough pressure build up to literally blow the lid off.
I don't think so spicerack. It wasn't frozen when she gave it me. I rang her today to give her a giggle. I got a telling off. She meant me to wrap it in greasproof and just put it in a dish.
Tony @ 22.59...nothing to do with moisture content.
Anything with high sugar content should be microwaved with care and for short periods only...I thought that this was common knowledge (or common sense!)