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Does a meat thermometer need to undergo tevillas keilim before use, since it does not really do anything to prepare the food itself?

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up vote 9 down vote accepted

According to the Star-K Tevila Guidelines, no tevila is required for a meat thermometer.

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The Star-K says star-k.org/kashrus/kk-containers-tevilas.htm : "Utensils require tevila with a brocha when they have direct contact with food during preparation or meal time and are made from metal such as aluminum, brass, copper, gold, iron, lead, silver, steel, tin, or glass such as pyrex, duralex, and corelle." Why would they say that no tevila is required for a meat thermometer? I've only seem metal meat thermometers, and isn't checking the temperature "direct contact with food during preparation"? – Menachem Jul 1 '11 at 18:38
@Menachem No it is not. – avi Feb 2 '12 at 20:05
@avi: why not? aren't we talking about one of these: static.guim.co.uk/sys-images/Guardian/Pix/pictures/2011/5/26/… – Menachem Feb 2 '12 at 21:53
@Menachem yes, that is what we are talking about. But just as tasting cake batter while preparing cake is not the same as eating cake, sticking a thermometer in a piece of meat, and then taking it out is not food preparation. – avi Feb 3 '12 at 11:12
@avi: can you please define food preparation, with sources preferably. – Menachem Feb 3 '12 at 15:51

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