It's cheaper than chemicals. An oven uses about 4Kw. Let's assume you run the oven for 2 hours. Let's also assume a duty cycle of 50% (it's probably less). Electricity is $0.10/KWH or less in most of the US. That makes the cost of cleaning a load of pots 40 cents or less. Plus you don't need to dispose of the used chemical wash. Plus you don't need to rinse. Plus it is easy - you just turn the oven on. Plus my wife likes Me to clean the oven.
Plus, mine's gas-fired, and doesn't use electricity, except for the glowbar. And, when you're done, there's no bleach residue (caustic soda/hypochlorite/etc.) absorbed in the terracotta to be flushed out.
Carl "hot stuff" Gustafson
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