knife Archives - AskTheRav

May I send my knives to be sharpened to a professional company?

Question: 1. Can I sharpen a (fleishig) fish knife on the same whetstone as my regular fleishig knives? What about milchig knives? 2. May I send my knives to…

Is a Blender used for a Milchig Onion – Milchig?

Question: I cut an onion with a milchig knife, then put the onion into a brand new blender with a new blender blade, is the blender blade now milchigs…

Knife raised as if to stab a person

Question: Is a knife that someone used as if he's going to stab someone else become trief? And how do I kasher it? I was told that the knife…

Milk and meat concern when regrowing onions

Question: After cutting off and using the edible part of an onion for food, I took the leftover bottom-parts of these long green onions (i.e. basically the roots) and…

I cut an onion in half with a fleishige knife. Than I continued cutting it with a parve knife. What’s the din of the onion? What’s the din of the parve knife? Whoever eats that onion becomes fleishig?

1. The onion is fleishig. 2. The pareve knife should be kashered if you want to continue using it for pareve. 3. If you eat the onion, you do…

Growing up, my family would never gift knives, since knives can shorten lives etc. Is this something we should be careful about?

I was trying to look up a source and came across this. In the name of the Ba'al Shem Tov, "don't present a knife as a gift" (Sichot Haran…

Can a Fleishig knife that was used to cut cheese be Kashered? The knife had not been used for meat 24 hours prior, the knife and cheese were both cold. If so, can it be Kashered in boiling water? Please advise.

If both were cold, the knife does not need to be Kashered - just washed (NOT in hot water). #4297

A Pareve knife was only used for cutting bread but was washed together with Fleishig dishes. May I use that knife to cut bread and then use that bread with butter?

If the knife was washed with soap or if the water did not reach , the knife is considered Pareve and you may use the bread for Milchig. However,…

Regarding an onion cut with a Fleishig knife, can I have Milchigs before/after?

One may not eat or drink Milchig (dairy) products within six hours of eating meat. According to Halachah, if onions or other sharp foods are cut with a Fleishig (meat) knife, they…

A Fleishig knife cut an onion and the onion was put into a Milchig chopper. Is the Milchig chopper kosher?

The chopper should be Kashered. If not Kasherable, there is room for leniency, provided the chopper doesn’t heat up when used. See here for more details. Sources: נדו"ד, אינו…

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