Are you allow to make (just put hot water) a Tradition soup (pre-made soup) on shabbos? Is it considered cooking? And why

  • Why might it not be considered cooking? Isn't it literally cooking?
    – Double AA
    Aug 24, 2021 at 23:24
  • The rule of "once it's cooked, there's no problem re-cooking it" applies to solids like boiled chicken; not to liquids.
    – Shalom
    Aug 24, 2021 at 23:30
  • I actually was wondering the same thing a few weeks ago and then I heard a shiur that explained that it's a problem according to most poskim. However, R' Moshe holds a kli shlishi is not mevashel at all and therefore if you use hot water in a kli shlishi or would be permitted according to this opinion
    – Chatzkel
    Aug 25, 2021 at 0:24

1 Answer 1


This exact type of instant noodle soup is addressed by Rabbi Yoni Levin here

Ultimately, there are two potential pitfalls that making such soup on Shabbos would present:

  1. Bishul - cooking
  2. Makeh B'Patish - 'The final hammer blow' i.e. making something fit for purpose.

So, he walks us through both potential melachos and how to avert any chilul shabbos.

Bishul - if all the items are already cooked then there would be no problem because of the halachic dictum of 'ein bishul achar bishul' and therefore there would be no problem to pour hot boiling water into the cup. However, if we assume that not all items are not cooked e.g. aside for the soup mix there is also vegetables like peas and corn present inside, at first glance if this is the case, you should pour the water using a keli sheini. BUT, although we don't normally say there is bishul with a keli sheini, when it comes to kalei habishul (i.e. things that are cooked very easily e.g. tea) you can argue that the items in the tradition soup are indeed kalei habishul and a keli sheini would not suffice. Rav Moshe Feinstein is meikel that when making tea one can use a keli shelishi - and thus if you hold like this, a keli shelishi would work to make these tradition soup.

Makeh B'Patish - There is a halachic discussion as to whether this melacha is applicable to foods. The Shulchan Aruch 318 says you can't pour hot water on a raw fish as the action helps to complete the food - "והדחתן היא גמר מלאכתן".

The Rema there adds:

וה"ה כל דבר קשה שאינו ראוי לאכול כלל בלא שרייה דאסור לשרותו בשבת דהוי גמר מלאכה

This rule applies to all hard foods that cannot be eaten without first marinating them. Therefore one may not soak them (in hot water) on Shabbos, as it is a completion of a Melacha.

Rav Wosner zt"l in Shevet HaLevi, cheilek 8, siman 63 concludes on this Rema that we do say גמר מלאכתן on food. Rav Wosner over there is specifically speaking about cubes of soup mix that would be considered makeh b'patish. So arguably, even if we consider all the ingredients as being cooked, plus using a keli shelishi, we would still have to say that the hot water is transforming it from an inedible object to a now edible food i.e. it is now ראוי לאכילה (fitting to eat).

He says that we can argue that not everyone holds this way, so we don't have to rely on this Rav Wosner. Although he notes that Rav Shechter is machmir and says that we do say makeh b'patish applies to food. However, he says that Rav Shechter counters that these Tradition Soups in their initial state are actually edible and therefore he feels that Makeh B'patish would not apply to these soups.

Obviously, best practise is to ask your LOR.

  • What about bishul achar bishul b'davar lach?
    – Joel K
    Aug 25, 2021 at 9:46
  • 2
    It's not a davar lach. It's noodles
    – Chatzkel
    Aug 25, 2021 at 11:55
  • Two important points: 1. the noodles are edible in their dry state. It is the packets of dehydrated peas and carrots that may fall under the gmar m'lachtan issue. And 2. the spice packets may contain uncooked ingredients that would require relying on Rav Moshe's kli shlishi kula in order to be permitted.
    – Yahu
    May 23, 2022 at 19:40

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