# Difference btwn Sous Vide Mode & Low temperature bake with 100% steam?

**URL:** <https://community.anovaculinary.com/t/difference-btwn-sous-vide-mode-low-temperature-bake-with-100-steam/31109>\
**Category:** Anova Precision® Oven\
**Created:** [September 18, 2022, 4:18pm UTC](https://community.anovaculinary.com/t/difference-btwn-sous-vide-mode-low-temperature-bake-with-100-steam/31109 "2022-09-18T16:18:24Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![chueh](https://avatars.discourse-cdn.com/v4/letter/c/c5a1d2/32.png) [@chueh](https://community.anovaculinary.com/u/chueh)\
**Post date:** [September 18, 2022, 4:18pm UTC](https://community.anovaculinary.com/t/difference-btwn-sous-vide-mode-low-temperature-bake-with-100-steam/31109/1 "2022-09-18T16:18:24Z")

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I followed a regular roast beef recipe calling for 200F conventional bake for internal temperature130F (around 3-4 hours for conventional oven). However, I did add 100% steam, for I wanted softer and tender texture.

At the meant time, I saw a APO roast beef recipe calling for Sous Vide mode with same internal food probe for 130F for 27 hours.

I was curious about the sous vide mode recipe but did not have 27 hours to try it out during dinner time. Thus, out of curiosity with limited time, I turned the sous vide mode on during the roasting process. Strangely, the oven temperature reading changed from 200 to 186. Hm… I thought I was reading it wrong, so I turned the sous vide mode on and off to check the oven temperature.

Indeed, whenever the sous vide mode is off, it read 200, yet 186 with it on every single time.  
Q1. I don’t undertsand this concept: whatever the oven temperature is a fact; how come temperature reads differently between sous vide on or off?

Q2. Out of curiosity again, would this roast beef recipe for APO calling for 135F with sous vide mode on for 27 hours result in the same or at least similar taste, texture, and healthy benefit, if baked with sous vide mode OFF at the same temperature 135F with 100% steam???

Thanks

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**Author:** ![Douglas](https://sea2.discourse-cdn.com/flex016/user_avatar/community.anovaculinary.com/douglas/32/7533_2.png) [@Douglas](https://community.anovaculinary.com/u/Douglas)\
**Post date:** [September 18, 2022, 4:33pm UTC](https://community.anovaculinary.com/t/difference-btwn-sous-vide-mode-low-temperature-bake-with-100-steam/31109/2 "2022-09-18T16:33:35Z")

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Learn sous vide. Read Douglas Baldwin’s _A Practical Guide to Sous Vide Cooking._

> **[A Practical Guide to Sous Vide Cooking](https://douglasbaldwin.com/sous-vide.html)**
>
> A detailed discussion of sous vide cooking.

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**Author:** ![jhossom](https://avatars.discourse-cdn.com/v4/letter/j/7feea3/32.png) [@jhossom](https://community.anovaculinary.com/u/jhossom)\
**Post date:** [September 20, 2022, 12:01am UTC](https://community.anovaculinary.com/t/difference-btwn-sous-vide-mode-low-temperature-bake-with-100-steam/31109/3 "2022-09-20T00:01:01Z")

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I just did a sirloin roast today, cooking it in sous vide mode at 132F for 8 hours, followed by a quick sear on the grill. It’s perfect for a busy day, since you can start it in the morning and it’s ready whenever you want it in the evening with little fuss to finish. The probe was at 133F in about 3-4 hours.

 ![20220919_172642](https://us1.discourse-cdn.com/flex016/uploads/anova/original/2X/6/63ec0939b5291789de6089913a5949cc33e81423.jpeg)

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**Author:** ![Ibkev](https://avatars.discourse-cdn.com/v4/letter/i/dfb087/32.png) [@Ibkev](https://community.anovaculinary.com/u/Ibkev)\
**Post date:** [October 4, 2022, 4:32pm UTC](https://community.anovaculinary.com/t/difference-btwn-sous-vide-mode-low-temperature-bake-with-100-steam/31109/4 "2022-10-04T16:32:44Z")

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I believe that in sous vide mode the oven uses a wet bulb temperature rather than dry bulb.

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**Author:** ![chueh](https://avatars.discourse-cdn.com/v4/letter/c/c5a1d2/32.png) [@chueh](https://community.anovaculinary.com/u/chueh)\
**Post date:** [October 4, 2022, 4:50pm UTC](https://community.anovaculinary.com/t/difference-btwn-sous-vide-mode-low-temperature-bake-with-100-steam/31109/5 "2022-10-04T16:50:13Z")

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thanks