cooling the chocolate

Susie2
@susie2
03/09/15 13:52:42
14 posts

Thanks Sebastian. I will look for a set screw refrig.

Sebastian
@sebastian
03/09/15 13:40:13
754 posts

The issue i suspect you're having is one of sugar bloom, and that results from condensation.  You get condensation when something cold runs into warm air (warm air contains more water than cold air) - and when the warm, wet air hits the cold chocolate, that decrease in air temperature means the air can't hold the excess moisture, and it promptly deposits itself on your bar.  When it does so, it dissolves some sugar in your chocolate, and then it eventually evaporates and leaves behind the dissolved sugar that looks now like white film.

 

Your typical consumer fridges have thermostats that aren' meant to go as high as 55 - some models have a cowling that, if you remove the cover, there's a set screw that you can turn to further adjust the range of the condensing unit to enable it to achieve warmer temperatures - its a trial and error thing as there's no gradations on the set screw (and not all modesl have it) - you just have to turn it, put a thermometer in there and read it 4 hours later to see what's happened.  If yours has the set screw, it's the least expensive way to modify your fridge.  If not,  you can replace the thermostat - it's not hard to do, but not everyone's comfortable cutting wires.

 

A very helpful tool for managing condensation is a psychrometric chart - big scary word, the chart itself is also scary looking, but once you understand how to read it, will help you understand what the temperatures of your fridge (or the room  your fridge is in) need to be to minimize the odds of condensation.

Kerry
@kerry
03/09/15 13:39:44
288 posts

A Cool Bot will control an air conditioner to make your own cold room.




--
www.eztemper.com

www.thechocolatedoctor.ca
Susie2
@susie2
03/09/15 10:33:32
14 posts

Thanks fo the info.

I put in 10-15 minutes and refrig. temp is 48F.

I tried to cool in at RT and found out it won't release off the mould....

I will definately check the DIY cooling tunnel.

I wonder if anyone came across refrig unit that can be adjusted to 55F. ( My mom in law's wine cooler is definately 55F capable, but too small and too expensive...)

 

 

Ash Maki
@ash-maki
03/09/15 09:06:39
69 posts

Some where on the site here Clay posted plans for a DIY Cooling tunnel. I Tryed bulding something like it and it did a pretty good job for us. Came in around $800

Kerry
@kerry
03/07/15 11:06:41
288 posts

How long are you leaving it in the fridge?  I generally put it in for 10 to 15 minutes when it is actively crystallizing to carry off the latent heat of crystallization - then take it back out to room temperature.  Too long, it gets too cold and moisture will condense on the surface causing sugar bloom.  

Room temperature may result in the latent heat causing some pieces to get thrown out of temper.




--
www.eztemper.com

www.thechocolatedoctor.ca
Susie2
@susie2
03/06/15 12:09:27
14 posts

I am about to start my chocoalte business but I do not have a cooling tunnel..... I put chocolate into refrig. to cool and finds too many white surfaces (moisture i guess).

Is it possible just let the chocolate self dry at RT (66F-70F), RH<50. Any concerns? I know it takes a littble bit longer time though.


updated by @susie2: 04/10/15 09:42:33

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