Author Topic: Induction Cooktop for Decoction?  (Read 350 times)

Offline philm63

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Induction Cooktop for Decoction?
« on: June 20, 2019, 01:34:10 AM »
Setting up an electric brewery in the basement and just thought about how I'm going to do decoctions when desired. I brew 5-gallon batches and so I thought maybe a portable induction cooktop would fit the bill.

I'm looking at an 1800 W induction cooktop and a 12 Qt. stainless pot with a 6010-clad bottom suitable for induction cooking. I figure the 3-gallon pot not only would fit the cooktop real well, but also would hold enough to do a decoction for a 5-gallon batch assuming I'd never pull more than, say, 2.5 gallons of thick mash. And 1800 W should be sufficient to raise the temperature of the decoction to its rest temperature, then bring it up to a boil pretty quickly.

Has anyone done this, and what are your thoughts?
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Offline BrewBama

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Re: Induction Cooktop for Decoction?
« Reply #1 on: June 20, 2019, 02:22:43 AM »
I’ve not done a decoction on my induction cooktop, but I can say that I boil ~7 - 7.5 gal collected sweet wort with 2 - 2.4kw. Based on this I believe your 1.8kw unit should handle 2.5 gal easily.


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Offline ajk

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Re: Induction Cooktop for Decoction?
« Reply #2 on: June 20, 2019, 11:52:14 AM »
Induction is great for decoction. The heat it produces is so even and mellow, you don't even need to stir, at least on my system.


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Offline AleGeek

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Re: Induction Cooktop for Decoction?
« Reply #3 on: June 22, 2019, 02:20:32 AM »
I can vouch for an induction cooktop working for decoction. I brewed on an 1800w cooktop for yrs & it can bring 3.5gal of wort to a rolling boil no problem. I only did one decoction mash to try it. Induction provided great control & brought it to boil fast w/o burning.

The only tip I have is if you are taking any temp readings w/ a metal thermometer in the decoction while the cooktop is on, it throws the temp reading (digital & analog thermometers, I tested both). 3 batches in a row when down the drain because I was multi-step BIAB mashing & taking temp readings that I discovered later were upwards of 10 degrees off because of the cooktop.

Offline BrewBama

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Re: Induction Cooktop for Decoction?
« Reply #4 on: June 22, 2019, 02:47:00 PM »
The only tip I have is if you are taking any temp readings w/ a metal thermometer in the decoction while the cooktop is on, it throws the temp reading (digital & analog thermometers, I tested both). 3 batches in a row when down the drain because I was multi-step BIAB mashing & taking temp readings that I discovered later were upwards of 10 degrees off because of the cooktop.

I’ve never heard that before^^^



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Offline rburrelli

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Re: Induction Cooktop for Decoction?
« Reply #5 on: June 24, 2019, 02:41:17 PM »
The only tip I have is if you are taking any temp readings w/ a metal thermometer in the decoction while the cooktop is on, it throws the temp reading (digital & analog thermometers, I tested both). 3 batches in a row when down the drain because I was multi-step BIAB mashing & taking temp readings that I discovered later were upwards of 10 degrees off because of the cooktop.

I’ve never heard that before^^^

True. Metal that is magnetic in the thermometer will give bad readings.



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Offline philm63

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Re: Induction Cooktop for Decoction?
« Reply #6 on: June 27, 2019, 12:36:26 PM »
Begs the question; Is there a thermometer that won't go bonkers when used with an induction cooktop?
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Offline BrewBama

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Re: Induction Cooktop for Decoction?
« Reply #7 on: June 27, 2019, 02:01:51 PM »
Just use my Chef’s Alarm.


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Offline ajk

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Induction Cooktop for Decoction?
« Reply #8 on: June 27, 2019, 02:43:06 PM »
The Fermentap one I have works fine. Not sure why.