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Speaker 1: Brain Stuff is sponsored by Harry's dot com. Get a

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Speaker 1: great shaving experience for a fraction of the price. The

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Speaker 1: quality of the shave is so important that Harry's purchased

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Speaker 1: the factory that makes their blades. Fifteen dollars gets you

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Speaker 1: a set that includes a handle, three blades, and shave cream.

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Speaker 1: Go to Harry's dot com use the code brain stuff

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Speaker 1: to say five dollars off your first purchase. Welcome to

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Speaker 1: brain Stuff from how stuff works dot com where smart happens. Hi,

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Speaker 1: I'm Marshall brain. A listener wrote into ask what is

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Speaker 1: liquid smoke? You may have seen liquid smoke called for

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Speaker 1: in certain recipes, but what is it. Liquid smoke is

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Speaker 1: literally liquefied smoke. In a prior podcast, we talked about

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Speaker 1: what smoke is. It is volatile hydrocarbons that evaporate from

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Speaker 1: wood when you heat wood up. What this means is

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Speaker 1: that by cooling smoke, you can cause the hydrocarbons to condense.

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Speaker 1: What you get is a dark, sticky liquid that contains

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Speaker 1: all the flavors of smoke. If you says that condensate,

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Speaker 1: thin it out a little, and put it in a bottle,

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Speaker 1: you have liquid smoke. The process starts by taking wood

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Speaker 1: chips or sawdust, putting them in a big metal container,

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Speaker 1: and then heating it. The heat evaporates the volatile hydrocarbons.

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Speaker 1: Then you run the smoke into a condenser, where cold

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Speaker 1: coils caused the smoke to turn back into liquid form.

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Speaker 1: Do you have any ideas or suggestions for this podcast?

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Speaker 1: If so, please send me an email at podcast at

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Speaker 1: how stuff works dot com. For more on this and

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Speaker 1: thousands of other topics, go to how stuff works dot com.

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Speaker 1: Brain Stuff is sponsored by Harry's dot com. Get a

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Speaker 1: great shaving experience for a fraction of the price. The

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Speaker 1: quality of the shave is so important that Harry's purchased

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Speaker 1: the factory that makes their blades. Fifteen dollars gets you

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Speaker 1: a set that includes a handle, three blades, and shave cream.

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Speaker 1: Go to Harry's dot com. Use the code brain stuff

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Speaker 1: to say five dollars off your first purchase.