Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום רביעי, Teves 4 – Cooking After Cooking (12/24/25)
Cooking After Cooking
Based on the…גמרא דף לט. “כל שבא (until the two dots) which is quite of the Mishna דף קמה עמ’ ב an item was cooked it may be reheated inside a Kli Rishon.
https://hebrewbooks.org/shas.aspx?mesechta=2&daf=39&format=pdf
The רשב”א דף לט. ” Speaks this out explicitly teaching us the rule אין בישול אחר בישול
Does this apply to liquid that was cooked and cooled down?
This question is a machlokes Rishonim
Rashi רש'”י דף לד. “גזירה שמא – there is a violation of cooking by reheating liquids that cooled down.
https://hebrewbooks.org/shas.aspx?mesechta=2&daf=34&format=pdf
The רא”ש פרק ג’ ס’ יא speaks this out
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=354
The Ran – no difference between solids or liquid ר”ן פרק ג. דף מג. “תנו רבנו מביא אדם קיתון של מים starting from the words “מיהו הני מילי בדבר שלא נתבשלה ” (towards the end of the paragraph)
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=587
If an item was partially cooked is it prohibited to cook it further?
Does it matter if the item was cooked כמאכל בן דרוסאי?
Learn רשב”א דף לט.
https://hebrewbooks.org/pdfpager.aspx?req=40907&st=&pgnum=58
Learn רמב”ם ה’ שבת פרק ט הלכה ה
Learn טור ס’ שי”ח סע’ ד & טו
https://hebrewbooks.org/pdfpager.aspx?req=14268&st=&pgnum=40
https://hebrewbooks.org/pdfpager.aspx?req=14268&st=&pgnum=41
https://hebrewbooks.org/pdfpager.aspx?req=14268&st=&pgnum=47
Learn בית יוסף who discusses extensively the topic of אין בישול אחר בישול
Learn ב”ח for his explanation
Learn שולחן ערוך אורח חיים ס’ שי”ח סע’ ד & טו
What is the ruling of the Mechaber?
What is the ruling of the Rema?
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=273
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=280
https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=281
Major Question:
The Rema says that if the liquid did not cool down fully than it is permitted to be reheated.
Violation of cooking liquids is when the liquid reaches יד סולדת בו
Why should it matter if the liquid is still warm as long as it is under the temperature of יד סולדת בו it should be prohibited to reheat?
Learn משנה ברורה for an explanation
