Halacha for Tuesday 19 Av 5779 August 20 2019

Warming up Foods on Shabbat- Maran zt”l’s Suggestion

In the previous Halacha, we have discussed that just as it is forbidden to cook on top of an open flame on Shabbat, it is likewise forbidden to cook on top of an electric hotplate. The only distinction between an open flame and an electric hotplate IS regarding a food which was already cooked before Shabbat: Whereas it is forbidden to even warm up a pre-cooked food on an open flame on Shabbat, it is permissible to warm up such a food on an electric hotplate on Shabbat as long as the food is considered “dry,” such as bread or Challah and not “liquidy,” such as a soup. We have likewise explained the reasons for this.

A Dish Mostly Comprised Mostly of Sauce
A dish which contains mostly liquids and only a minority of “dry” or solid food, such as a vegetable soup, may not be placed on an electric hotplate on Shabbat since the prohibition of “cooking after cooking” on Shabbat applies to liquid foods. However, a food which is completely dry, such as bourekas or bread, may be placed on an electric hotplate or a stovetop covered with a layer of metal, for the prohibition of “cooking after cooking” does not apply to “dry” foods. Thus, since this food was fully-cooked before Shabbat, there is no prohibition to warm it up on Shabbat.

A Dish Which Contains a Minimal Amount of Sauce
A food which is mostly dry but contains a little bit of sauce, such as a dish of rice which has some moisture to it, is considered like a completely dry food which is permitted to be warmed up on an electric hotplate on Shabbat, for “cooking after cooking” does not apply to dry foods. Even if a dish contains sauce but cooking it causes the sauce or liquid to diminish in quality, it is indeed permissible to warm up such a dish on an electric hotplate or a stovetop covered with a metal sheet on Shabbat.

The Permissible Way to Warm up a Liquid Dish on Shabbat
If one would like to warm up a dish containing sauce or a completely liquid dish, such as a vegetable soup and the like (besides for water, which we shall not discuss presently), there is a halachically acceptable way to do so: One should set a timer to turn the hotplate off at a certain hour. When the hotplate is off, one may place anything one likes, even a soup, on top of it so that when it turns back on, whatever is on it will become warmed. In this manner, there is room for leniency without any concern.

Thus, if one wishes to heat up liquid foods or foods whose dry/liquid status is questionable for Shabbat day, one may set a timer to turn of the hotplate between eight and nine o’clock in the morning, for instance, and once the hotplate is off and is no longer hot, one may place any fully-cooked food on it that one wishes and avoid any concern.

Summary: One may not heat up any dish or food on an open flame on Shabbat. However, it is permissible to warm up a dry food on a stovetop covered with a layer of metal or an electric hotplate on Shabbat. Nevertheless, one may not warm up a liquid dish, such as a soup, on Shabbat. If one places the dishes on the hotplate when it is turned off by a timer, this is completely permissible; in this way, one may place even a soup or anything else one wishes on the hotplate and when the hotplate turns on again as a result of the timer, the foods will be permissibly reheated in honor of Shabbat.

Ask the Rabbi


הלכה יומית מפי הראש"ל הגאון רבי יצחק יוסף שליט"א

דין ברכת שפטרנו מעונשו של זה
לחץ כאן לצפייה בשיעורים נוספים

Recent Halachot

"תנא דבי אליהו כל השונה הלכות בכל יום מובטח לו שהוא בן העולם הבא"

נדה ע"ג א'

8 Halachot Most Popular

The “Asher Yatzar” Blessing vs. Birkat Hamazon

Question: In the previous Halacha, we have discussed if one becomes obligated to recite an after-blessing on food and before he does so, he uses the facilities and becomes obligated to recite the “Asher Yatzar” blessing, one should recite the “Asher Yatzar” blessing first and......

Read Halacha

Question: If one becomes obligated to recite an after-blessing after eating any food (for instance, by eating a Kezayit, approximately twenty-seven grams, of fruit) and before reciting the after-blessing, one used the facilities and becomes obligated to recite the “Asher Yatzar” blessing, which blessing must one recite first: Should one first recite the “Asher Yatzar” blessing or the after-blessing on the food one ate?

Answer: This question has already been discussed by the Maharshal (Rabbeinu Shlomo Luria, one of the foremost Acharonim who lived approximately five-hundred years ago in Eastern Poland and authored the Sefer Yam Shel Shlomo and others) in his responsa (Chapter 97) and writes that if one becomes obli......

Read Halacha

Reciting Birkat Hamazon in the Place One Has Eaten

Question: Is one obligated to recite Birkat Hamazon specifically where one has eaten bread or may one recite this blessing elsewhere? Answer: One who eats a bread meal must recite Birkat Hamazon in the place where one has eaten and one may not go to a different place and recite the blessing there......

Read Halacha

Havdala on Motza’ei Shabbat Which Coincides with Tisha Be’av and the Laws of an Ill Individual Who Must Eat on Tisha Be’av

On years during which Tisha Be’av falls out on Motza’ei Shabbat, such as this year, 5781, there are three opinions among the Rishonim regarding how Havdala should be recited on a cup of wine on Motza’ei Shabbat. The first opinion is that of the Geonim who write that one should r......

Read Halacha


The Laws of Motza’ei Tisha Be’av and the Tenth of Av

Following halachic nightfall on Tisha Be’av which is approximately twenty minutes after sunset (somewhat later in the United States), one is permitted to eat and drink. It is customary to recite Birkat Ha’Levana (blessing on the new moon) following Arvit prayers on Motza’ei Tisha B......

Read Halacha

When Av Begins, We Diminish Our Joy

Yesterday, Shabbat, we marked Rosh Chodesh Av. Next Sunday (beginning from Motza’ei Shabbat), will mark Tisha Be’av. May Hashem soon switch this month to one of joy and celebration. The Jewish Nation’s Fortune During the Month of Av Although we customarily implement some mourn......

Read Halacha

Tisha Be’av Falls Coincides With Motza’ei Shabbat- Clothing for Tisha Be’av

The Baraita in Masechet Ta’anit (30a) states that our Sages prohibited five things on Tisha Be’av: Eating and drinking, washing one’s self, rubbing one’s self with oils or lotions, wearing leather shoes, and marital relations. Our Sages said (Ta’anit 30b): “One......

Read Halacha

Reciting Birkat Hamazon While Travelling by Car

Question: If one is eating while travelling by car, may one recite Birkat Hamazon while continuing to travel? Answer: In the previous Halacha we have explained that our Sages have instituted that one must recite Birkat Hamazon while seated in order for one to have optimum concentration while bles......

Read Halacha