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For my final project I built a sous-vide immersion cooker

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21–30 of 140 posts

Re: For my final project I built a sous-vide immersion cooker

#21
post #20
post #7

food + heat + plastics doesn't sound very appealing...

The point of this mode of cooking is that it's low temp, below the temperatures at which plastics in high-quality freezer bags become an issue (Ziploc confirmed this to Dave Arnold earlier this year).

I was looking for the quote and found an old hn post that has the cooking issues link and information: https://news.ycombinator.com/item?id=7631985

Re: For my final project I built a sous-vide immersion cooker

#23
post #22
post #16

Earlier quoted context omitted.

This is what is holding me back on getting into sous vide. Any non plastic alternatives?

You can use mason jars if you are worried about plastic.

That works for things that perfectly fill a mason jar, but not well otherwise; the giant air pockets are an issue.

Re: For my final project I built a sous-vide immersion cooker

#24
post #13

This is a nice project but this common misconception is false: > Searing the food after sous-vide seals in the juices http://www.foodnetwork.com/videos/to-sear-or-not-to-sear-985...

You definitely want to sear though, both before and after (Kenji Alt is wrong about this). For flavor.

I'm dubious about searing it twice; it's something I've never seen mentioned in the reading I've done on slow, temperature-controled cooking. It seems like it would just dry out the edges, making them leathery; however, I'm willing to be educated otherwise in the effort to make a great steak.

Re: For my final project I built a sous-vide immersion cooker

#25
post #16
post #7

food + heat + plastics doesn't sound very appealing...

This is what is holding me back on getting into sous vide. Any non plastic alternatives?

Yes: you can use glass jars with liquid (oil, marinade, etc.) inside them. Make sure the jar isn't too large; there's potential safety issues with ramp-up temperature of the center of the jar vs the outside.

Re: For my final project I built a sous-vide immersion cooker

#26
post #16
post #7

food + heat + plastics doesn't sound very appealing...

This is what is holding me back on getting into sous vide. Any non plastic alternatives?

I fully expect plastics labelled with e.g "up to 90 degrees C" to not release anything unwanted into my food if I stay well below that temp. I'd also expect the label to have a wide margin to dangerous temperatures.

In theory you can use anything that handles the temperature, such as silicone. You could in theory force your food into a jar with a bit of oil.

Re: For my final project I built a sous-vide immersion cooker

#27
Great writeup, but we're probably past the point of DIY sous-vide systems being anything more than weekend hacker project for funsies.

I just picked up an anova a few months ago (was $169 on sale) and for that price you need to be getting a lot of enjoyment out of the build process and be happy having an inferior product at the end. http://smile.amazon.com/Anova-Sous-Vide-Immersion-Circulator...

Re: For my final project I built a sous-vide immersion cooker

#30
post #20
post #7

food + heat + plastics doesn't sound very appealing...

The point of this mode of cooking is that it's low temp, below the temperatures at which plastics in high-quality freezer bags become an issue (Ziploc confirmed this to Dave Arnold earlier this year).

It's been confirmed a number of places (see http://dinersjournal.blogs.nytimes.com/2008/08/11/harold-mcg... for another).

Make sure you're using Ziploc specifically -- as in that brand. Other manufacturers may have their own formulations for their plastics, including non-heat-stable plasticizers. I contacted Trader Joes, for example, when writing Cooking for Geeks, and they disclosed that their plastics are NOT heat safe.

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