Can I warm up meatballs on Shabbat morning? I am Ashkenazi - Matan - The Sadie Rennert

Can I warm up meatballs on Shabbat morning? I am Ashkenazi Rabbanit Debbie Zimmerman

October 31, 2019

Topic : Shabbat & Yom Tov ,


Can I warm up meatballs on Shabbat morning? I am Ashkenazi


Some basics about cooking on Shabbat

The laws of heating food on Shabbat are complex. While there is broad consensus on the larger issues, there are many nuances that are disputed. In this case we will go through the basics and progress to the disputed details.

On Shabbat cooking food is prohibited, but in many cases heating previously cooked food is permitted, due to the general halachic rule of “ein bishul achar bishul” – meaning once something is considered cooked it can’t be cooked again. Halachic authorities mention a few possible exceptions to this rule – the two that apply to this case are a davar lach (something wet) and mitztamek v’yafeh lo (something that improves the longer it’s cooked). To give a practical example of these exceptions: using a permissible heat source (such as a blech or hot plate) to heat a dry meat loaf on shabbat would not be considered cooking; but doing the same with meat balls in sauce might be.

Based on a gemara in Shabbat 34a, amongst other sources, several Rishonim maintain that the rule of “ein bishul achar bishul” does not apply to liquids.[i] Both the Shulchan Aruch and Rema agree that “yesh bishul achar bishul bidavar lach shenitzanen” – if a cooked davar lach has cooled, reheating it is considered cooking.[ii] Some halachic authorities disagree, and either allow reheating of precooked liquids no matter what (see Ritva Shabbat 39a), or do not allow for reheating liquids if they haven’t maintained their heat (see Rosh Shabbat 3:10) – still, most contemporary Ashkenazic authorities hold like the Rema.

In order to understand what we may heat on shabbat and how that can be done we must explain the definition of each part of this sentence:

The definition of davar lach:

While something like soup is clearly considered davar lach, other consistencies are disputed. Most foods will release condensation when reheated, so what amount of liquid in a dish constitutes a davar lach? While the most stringent opinions hold that any liquid at all is a problem, there are more lenient opinions.[iii] Some halachic authorities ruled that when the liquid is not the majority of the dish the food is considered a solid.[iv] Others rule that if the liquid/sauce is significant on its own it is a problem to heat the food on shabbat.[v] Most meatballs are problematic in both these regards. The Mishna Berura (318:32) rules that if one wants to heat food such as meatballs one must pour out the liquid from the dish.[vi]  This view was accepted by Rav Shlomo Zalman Aurebach (Maor Hashabbat Vol. 1 Letters 1, 2) and Rav Moshe Feinstein (Igrot Moshe 4:74) and it is a prevalent Ashkenazic opinion today.[vii]

What is considered bishul – heating/cooking:

Chazal (Shabbat 40b) defined cooking liquids as heating them until the point of “yad soledet bo” – a hand recoils from the heat. This gives quite a range – since yad soledet bo can be interpreted as so hot that the hand immediately recoils and can’t bear to touch the thing at all (which is estimated to be around 70°C), or hot enough that the hand can’t remain for more than a few seconds (which is closer to 45°C). These two explanations led many halachic authorities to use both minimum and maximum definitions of yad soledet bo. The minimum gives us the temperature at which a liquid is considered cooked when heated on shabbat, and the maximum determines how hot a liquid must be before shabbat so that it is considered cooked.[viii]

Now that accurate thermometers are readily available there is some debate among halachic authorities as to the exact temperature. Rav Shlomo Zalman Aurebach rules the low definition of yad soledet bo is 46°C, 114°F. (Kovetz Noam Vol. 7)

Therefore, if one heats a food to a temperature that does not yet reach the minimum of yad soledet bo – for our purposes 46°C – it would not be considered cooking. Based on a gemara that allows cold water to be placed adjacent to the fire to dispel the cold, the Shulchan Aruch rules that this is allowed as long as the food is not placed in a location it can reach yad soledet bo  – if it does it would be considered cooking. (OC 318:14) The Rema adds that some allow one to place cold liquids in a place that is adjacent to the fire that could reach yad soledet bo, as long as it is not on the heating surface itself, but he himself rules this is not allowed when the liquid has completely cooled – which is the case when something is taken out of the refrigerator. (ibid:15)

Some Ashkenazim rely on more lenient opinions concerning davar lach and mitztamek v’yafe lo in cases when the liquid is not an essential part of the dish – such as a bit of juices in the bottom of a roast chicken – and therefore even if it is heated to yad soledet bo it would not be considered cooking. Still, when the liquid is more central to the dish, such as in meatballs, one should take the more stringent approach and refrain from warming the dish in a place where it can reach yad soledet bo.


If one wants to serve warm meatballs in sauce for Shabbat lunch there are 3 options:

Leave them cooking from before shabbat – Although we did not explain this option previously, this is a popular way of serving liquidy foods on Shabbat day. One may leave the meatballs and sauce on the heat source from before shabbat, the way one would with cholent. (Unfortunately, anyone who tried this knows it normally doesn’t work as well for meatballs as it does for cholent.)
Remove the sauce and heat up the meatballs without the sauce – the sauce can be served cold, room temperature, or not at all.
Do not heat enough to be considered cooking – Warm the meatballs and sauce in a way they will not get to the minimum definition of yad soledet bo, 46°C, such as on top of another food that is being heated on a plata or blech, or adjacent to a heat source.


[1] Rambam, Rashba, and Ran generally maintain that ein bishul achar bishul also applies to davar lach (although maybe not to water). Rashi, Rosh, the Smag, and the Smak do not allow for reheating cooled liquids on shabbat as they all maintain yesh bishul achar bishul bidavar lach shenitztanen. The Rema’s opinion is not as absolute as the Shulchan Aruch, as he does allow for reheating a cooked liquid that is still warm, but this ruling is irrelevant to this discussion, as the question was heating meatballs that have been in the refrigerator – we are dealing with a cooled liquid, davar lach shenitztanen.

[2] Shulchan Aruch OC 318:4.

There are many reasons offered for this exception.

One is based on the idea that most foods in sauce improve with continued cooking, and therefore the cooking process is never really finished. This explanation is connected to the ruling of Rabbeinu Yerucham and a much broader topic of “mitzamek v’yafeh lo” – when cooking something for longer so it boils down improves the food. Rambam (Hilchot Shabbat 3:9) does not differ between liquids and solids but maintains that the food must be “fully cooked” – i.e. that it is not mitzamek v’yafeh lo.

Yet there are other explanations that don’t rely upon the idea that the food improves with continued cooking. One such explanation is that dry foods are still considered cooked and enjoyed even after they cool, but wet foods are not. Think about how many people are willing to eat a cold but cooked piece of chicken, and how many people are willing to eat cold chicken soup.

[3] See Shulchan Aruch HaRav OC 318:11 and Responsa Chatam Sofer 1:74, who rule that “any moisture at all” is not allowed if it is cold.

[4] Pri Megadim (OC Mishbetzot Zahav 253:13) explains that there is no problem in heating liquids per se, but rather heating foods that are mitztamek v’yafeh lo – foods that improve the longer they are cooked. He explains that foods with more solid than liquid are mitztamek v’ra lo while food that are majority liquid are mitztamek v’yafeh lo.

Other opinions do not make this distinction but rather rely on halachic rules of majority. For more see Minchat Cohen III Mishmeret Shabbat 2:2, Responsa Har Tzvi Mivashel 1, Eglei Tal Milechet Ofeh 26, Rav Ovadiah Yosef, Yabiya Omer VII OC 42:7

[5] Based on Shulchan Aruch OC 318:16, Taz there

[6] Based on ibid , 104-105 it seems that one does not have to go so far as to wipe down all traces of liquid that clings to the food, as is not its own entity, and there are very few foods that don’t have any liquid or oil.

[7] Rav Moshe Feinstein says that in a time of great need one may be lenient when the liquid is the minority, based on the ruling of the Pri Megadim. This does not seem to fall into that category, both because it is sha’at hadchak, and because it is not clear that meatballs in sauce are mitztamek v’ra lo.

[8] In other words, in the sentence ein bishul achar bishul – chronologically the first bishul would have to have cooked the food at a heat of at least 70°C so that it could be reheated on shabbat to a temperature as low as 46°C.

Rabbanit Debbie Zimmerman Debbie Zimmerman graduated from the first cohort of Hilkhata – Matan’s Advanced Halakhic Institute and is a Halakhic Responder. She is a multi-disciplinary Jewish educator, with over a decade of experience in adolescent and adult education. After completing a BA in Social Work, Debbie studied Tanakh in the Master’s Program for Bible in Matan and Talmud in Beit Morasha.

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