An onion is cut into small pieces with a fleishig knife. Then the pieces of onion are chopped in a food processor that was recently used to proses dairy. The onion is obviously treif, but what is the status of the food processor?

  • "The onion is obviously treif" - Please briefly explain why, with a supporting source.
    – DanF
    Sep 12, 2017 at 21:46
  • @danf it absorbed both meat and milk flavors from the two blades that cut it
    – Double AA
    Sep 12, 2017 at 22:04
  • "... that was recently used..."; does OP mean within 24hrs.?
    – Oliver
    Sep 12, 2017 at 22:06
  • 1
    @Oliver wont matter if you consider an onion a דבר חריף Sep 13, 2017 at 11:40
  • 1
    @Oliver yo''d si' 96 Sep 13, 2017 at 19:41

1 Answer 1


There is a conflict of opinions whether or not a davar charif (sharp food) transfers taste from a meat knife, that it was first cut with, into another [neutral] utensil (see Magen Avraham 451:31) or not (see Even Ha'ozer 96:3). It therefore may be argued that in OP's case the meat taste from the knife became pagum (soiled) and therefore no issur (prohibited food) was transferred into the blender (cf. Rabbi MT Dinkel's 'Davar Charif' pg. 56). Additionally, there is the opinion that a sharp food can only emit absorbed flavor by duchka de'sakina (when pressure is applied) (cf. Pri Megadim, EA 447:32) and a blender may or may not fit this category. If the blender was not used that same day on which the onion was processed there may be different opions at play to be lenient with regards to the bender's status (cf. Dinkel, op. cit., pg. 58).

  • +1 Rabbi Belsky was of the opinion that blenders do not qualify for duchka disakin.
    – user6591
    Sep 13, 2017 at 23:45

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