Online Shiurim

Rabbi Baruch Bodenheim: Gemara Shabbos: Perek Kirah, יום שני, Kislev 18 – Daf 42b Sugya – Kli Shlishi (12/08/25)

by · December 8, 2025

Kli Shlishi

The Gemara clearly states that there are items that are קלי בישול and cook easily and quickly. Those items can cook inside a Kli Sheini. 

The Magen Avraham ruled that since we don’t know what items are not קלי בישול we have to be strict on placing any raw items that is raw except for the items listed in the Gemara that definitely do not cook in a Kli Sheini. 

Point to Consider 

Do we have the concept of קלי בישול in regards to a Kli Shlishi?

Summarize the opinions we learn regarding if there is difference between a Kli Sheini and a Kli Shlishi.

1. The dispute between the Beis Yosef and the Bach.

https://hebrewbooks.org/pdfpager.aspx?req=14268&st=&pgnum=45

2. The position of the Pri Megadim and his proof 

https://hebrewbooks.org/pdfpager.aspx?req=41248&st=&pgnum=204

3. The dispute between the Mishna Berura and the Chazon Ish

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=276

https://hebrewbooks.org/pdfpager.aspx?req=14336&st=&pgnum=161

4. The ruling of Rav Moshe Feinstein zt”l and the basis of his ruling 

See אגרות משה אורח חיים חלק ד ס’ עד בישול אות טו & יח 

https://hebrewbooks.org/pdfpager.aspx?req=920&st=&pgnum=139

https://hebrewbooks.org/pdfpager.aspx?req=920&st=&pgnum=140

Is there a difference in regards to the heat of a Kli Sheini to affect cooking?

Learn חיי אדם ה’ שבת פרק כ סע’ ד and the נשמת אדם (on bottom) who introduces a new reason to prohibit 

https://hebrewbooks.org/pdfpager.aspx?req=49397&st=&pgnum=257&hilite=

What are the sources of the Chayei Adam for this new concept?

Do we rule in accordance with this stringency?

Learn משנה ברורה ס”ק מ”ח

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=276

And חזון איש אורח חיים ס’ נב אות י”ט 

https://hebrewbooks.org/pdfpager.aspx?req=14336&st=&pgnum=161

What is the best permissible method to make hot tea on Shabbos?

See משנה ברורה ס”ק לט for a lengthy discussion about this. 

https://hebrewbooks.org/pdfpager.aspx?req=60388&st=&pgnum=275

You may also like...