Cutting an onion that was cut with a meat knife in a neutral food processor
Question
Answer
The food processor will become meaty.
Source
Magen Avraham in Siman TNA, SK 31 writes: "And therefore they act improperly when sometimes they cut ginger with a meat knife and grind it in a mortar, and it turns out that the mortar is imbued with meat, and then they grind spices in it and eat with milk. Therefore, one should be careful to cut ginger only with a new knife:" This means that, in his opinion, the mortar absorbs the taste from the ginger.
However, Even Ha-Ozer in Yoreh De'ah, Siman 96, writes that he disagrees with Magen Avraham, and holds that a sharp item does not release taste with a knife, but only a little taste, and it is considered nat bar nat and permitted, and the advantage of the sharpness is that it releases taste for the better but does not absorb.
Chavot Da'at challenges this with another logic, because he holds that food does not release taste in a utensil without sauce.
Nevertheless, Mishna Berura in Siman TNA, SK 90, quotes the words of Magen Avraham, and it seems that this is his opinion.
