The claim that the oven mitt was developed by an individual named Earl Mitt is an internet hoax. Historical evidence and reference sources show that 'Earl Mitt' is a fictional eponym created as a joke.
Evidence against · 2
skeptics.stackexchange.com: Was the oven mitt first developed by Earl Mitt?
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The post questions whether 'Earl Mitt' even existed, noting the story was a hoax removed from Wikipedia.
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More against · 1
en.wikipedia.org: Oven glove
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The article defines oven gloves/mitts without mentioning any inventor named Earl Mitt.