May one move a pot which is placed on the blech in an area which is not directly over the fire to a part of the blech which is directly over the fire?
Is the entire blech considered a stovetop which is גרוף וקטום or is it considered just סמוך לכירה?
Bring a proof
Learn אורחת שבת ח”א פרק ב סע’ סט & ע with the footnotes
Learn אגרות משה או”ח חלק ד ס’ עד, בישול אות יב
Learn חזון איש או”ח ס’ ל”ז ס”ק י
Learn שמירת שבת כהלכתו פרק א סעיף כה & הערה קכו
And קובץ הלכות שבת ח”ב פרק כו סע’ מ & הערה נה
Focus on next question
The prevalent practice is to use a blech on a stovetop which would serve as קטום. What is the source that a sheet of metal would accomplish the same halachic status as placing ash on the coals?
See שולחן ערוך אורח חיים ס’ רנ”ג סע’ ג and משנה ברורה ס”ק פא
In many electrical appliances the heating elements are covered by a sheet of metal like a crock pot which the walls of the crock pot covers the coils. Does one need to cover/line the crock pot or is the sheet of metal/ walls considered a blech?
(For explanation according to the Rif what the uncertainty of Rebbe Zeira was and how this coincides with conclusion of the difference of the pol of water has high walls or not – see שפת אמת)
How does the Shulchan Aruch conclude?
Learn שולחן ערוך אורח חיים ס’ של”ט סע’ ב and the משנה ברורה
May one move a pot which is placed on the blech in an area which is not directly over the fire to a part of the blech which is directly over the fire?
Is the entire blech considered a stovetop which is גרוף וקטום or is it considered just סמוך לכירה?
Bring a proof
Learn אורחת שבת ח”א פרק ב סע’ סט & ע with the footnotes
Learn אגרות משה או”ח חלק ד ס’ עד, בישול אות יב
Learn חזון איש או”ח ס’ ל”ז ס”ק י
Learn שמירת שבת כהלכתו פרק א סעיף כה & הערה קכו
And קובץ הלכות שבת ח”ב פרק כו סע’ מ & הערה נה
The prevalent practice is to use a blech on a stovetop which would serve as קטום. What is the source that a sheet of metal would accomplish the same halachic status as placing ash on the coals?
See שולחן ערוך אורח חיים ס’ רנ”ג סע’ ג and משנה ברורה ס”ק פא
In many electrical appliances the heating elements are covered by a sheet of metal like a crock pot which the walls of the crock pot covers the coils. Does one need to cover/line the crock pot or is the sheet of metal/ walls considered a blech?
Very quickly review the גמרא דף מ: “א”ר יצחק בר אבדימי (middle of the wide lines) until “היכי עביד הכי”
Question:
Why is it permitted to place uncooked food in a כלי שני? Why should a כלי שני be different than a כלי ראשון if the temperature of the water is still hot enough to cook?
Learn תוס’ “ושמע מינה
Question on Tosfos:
What is the exact reason why kli sheini can not cook. Is it because the walls cool down the liquid or is it because the walls are not hot?
Many people have the practice of turning a pan upside down and placing cold fully cooked solid food from the refrigerator on top of the upside down pan on Shabbos morning?
Is this permitted according to the פרי מגדים?
Learn שמירת שבת כהלכתו פרק א סעיף מד & הערה קכו
And see קובץ הלכות שבת ח”ב פרק כו סע’ לד & הערה מח
Question:
If one places a pan of food on top of a soup pot which is on the blech. May one move the pan on Shabbos and place it directly on the blech?
Point to consider:
What is the status of a pot of food that is resting on top of another pot which is on the stovetop.
Is it considered on the fire which is גרוף וקטום or is it considered just סמוך לכירה ?
Why is the case of a timer that will shut off the electricity before the water can get hot different from heating towels?
Major Question:
Why is it permitted to place uncooked food in a כלי שני? Why should a כלי שני be different than a כלי ראשון if the temperature of the water is still hot enough to cook?
Learn תוס’ “ושמע מינה
Question on Tosfos:
What is the exact reason why kli sheini can not cook. Is it because the walls cool down the liquid or is it because the walls are not hot?
Why is the case of a timer that will shut off the electricity before the water can get hot different than heating towels?
Major Question:
Why is it permitted to place uncooked food in a כלי שני? Why should a כלי שני be different than a כלי ראשון if the temperature of the water is still hot enough to cook?
Learn תוס’ “ושמע מינה
What is the exact reason why kli sheini can not cook. Is it because the walls cool down the liquid or is because the walls are not hot?
Would a thermos be considered a kli sheini?
Continue learning the גמרא דף מ. “היכי עביד הכי until “א”ר זירא ” (three lines from the bottom of the Amud)
Next Gemara deals with the topic of swimming on Shabbos
Learn the גמרא דף מ: “א”ר זירא (three lines from the bottom of the Amud) until the two dots on top of דף מא
Why is the case of a timer that will shut off the electricity before the water can get hot different than heating towels?
Major Question:
Why is it permitted to place uncooked food in a כלי שני? Why should a כלי שני be different than a כלי ראשון if the temperature of the water is still hot enough to cook?
Learn תוס’ “ושמע מינה
Continue learning the גמרא דף מ. “היכי עביד הכי until “א”ר זירא ” (three lines from the bottom of the Amud)
Learn רמב”ם ה’ שבת פרק ט הלכה ו who defines the Melacha of Bishul as softening something hard or hardening something soft through the application of heat.
Clarify the argument between the שער הציון and the אגלי טל explanation for Rebbe Akiva Eiger why water which is drinkable at room temperature is a violation of cooking.
Continue learning the גמרא דף מ: “א”ר יצחק בר אבדימי (middle of the wide lines) until “היכי עביד הכי”
Learn the רי”ף who has a different Girsa in the third Halacha.
Why is heating water a violation of cooking according to the Rambam as water is edible raw?
Learn שו”ע ס’ רנ”ד סע’ ד
How could the Shulchan Aruch rule that one who cooks fruit or vegetables which are edible raw is violating the melacha of cooking on Shabbos when the Rambam clearly rules one is not in violation?
Very quickly review the גמרא דף מ: “ת”ר מביא אדם until איבעיא להו”
Learn the גמרא דף מ: “איבעיא להו
until א”א יצחק בר אבדימי (middle of the wide lines)
There are three opinions in regards to heating oil on Shabbos.
Major Questions:
How is it possible to say that one who cooks oil does not violate cooking on Shabbos?
Why would warming oil to lukewarm temperature be considered cooking?
According to רשב”ג that there is cooking by oil and even warming up the oil is considered cooking why is it permitted to lather ones hands with oil and hold it near a fire?
How could the Shulchan Aruch rule that one who cooks fruit or vegetables which are edible raw is violating the melacha of cooking on Shabbos when the Rambam clearly rules one is not in violation?
A pot that was left on a hot spot on the blech and then moved over to a spot which is not יד סולדת with intent to return to the hotter area but person let go of the pot, may it be returned to the hot spot on the blech?
