Two years running, my Mum majored in melting the leftover Xmas pudding.
Xmas day, we steamed the pudding in its plastic pot, in a pan. Ate half, saved the rest for Boxing Day. Boxing Day, put it on to steam again, but as by then we'd all relaxed from the frenzy of Xmas Day, it got forgotten. Twice we had to throw away a pan, with a plastic pot welded into it.
She also once had a steamed pudding explode in the microwave - that was a mystery, she'd done them hundreds of times before, perfectly ok. The pudding was nicely cooked, but all over the inside of the microwave. So she just served it a bit jumbled up, with custard.