I had a roommate who did the same thing with chestnuts in a microwave. Did not smell anywhere near as nice as your flambéed tubers. Never leave anyone unattended who is more familiar with Homer (The Odyssey) than with Home Depot.
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Hope for the best and prepare for the worst.

The object in life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane