Sous Vide Cooking

Time and Accurate Temperature

Polyscience compaires an immersion circulator and a non stired water bath

by on Jan.23, 2010, under Equipments & Accessories, Time and Accurate Temperature

Today Polyscience made the demonstration that a non stired water bath cannot be as efficient as an immersion circulator. It is funny to see that Polyscience directly mentions Sousvidesupreme in the TAG of the article.

Polyscience video indicates clearely that a non stired water bath has a longer response time to reach the desired core temperature. Therefore, it is obvious that Douglas Baldwin cooking tables sould be used with care. Douglas Baldwin indicates in the Pratical Guide to Sous Vide “With all these digital controllers, I highly recommend setting the temperature offset (measured near the temperature at which you wish to cook) using a high quality digital thermometer. Indeed, at the default settings the thermistors used in the above controllers can easily be off 2–4°F (1–2°C)”.

Freshmealsolutions mentions clearely in the user manual of the SousVideMagic : “If you don’t have a proper food core temperature sensor probe, always cook at desired core temperature settings for the duration as specified by reliable recipes with an additional safety factor of at least 25% longer…”
In addition the manual indicates “The default settings are designed to overshoot 1 or 2 degree higher for safety reasons. You can reduce the overshoot by making your own PID adjustments. See the document “PID Tuning”.”

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Jean-François

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Pear cooked Sous Vide at 80°C during 30 minutes

by on Jan.02, 2010, under Books, Recipes, Time and Accurate Temperature

sous-vide-poireBruno Goussault’s DVD mentions a recipe of a pear cooked sous vide:

  • 1 pear
  • 30 g chocolate
  • 20 g vanilla sugar (vanilla extract plus sugar)

The recipes mentions puting the pear sous vide and immerse the pouch in a water bath set at a temperature of  8O°C  until the pear is “done”.

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Their is no mention of the cooking time. I checked several times the pear before it becomes too soft and therefore decided to stop cooking the pear after 30 minutes. I chilled the pear and kept it in the fridge one day before serving it.

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The result is a very nicely cooked pear but I can’t say this pear was something special. It was good but nothing amasing. I think the main advantage of this way of cooking pears is the possibility to keep them 15 to 25 days in the fridge (at the condition to keep them in the pouch). This is definitely a very good point for professionnals.

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Jean-François

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