An Onion Cut with a Fleishig Knife and Used in a Pareve Food Processor

I cut an onion with a fleishig knife and then accidentally put the onion into my pareve food processor. Is my food processor still pareve, or does it need to be kashered?

There is a disagreement among poskim as to the status of this food processor. The Magen Avraham (451:31) writes that if one cut a spicy food, such as ginger, with a fleishig knife, and then crushed the ginger in a grinder, the grinder would become fleishig. Subsequent spicy foods that are put in the grinder will become fleishig as well. However, the Even Ha’ozer (Y.D. 96:3) disagrees, and shows that most poskim hold that the food processor remains pareve. The accepted position is that the food processor remains pareve, however it is considered praiseworthy to kasher the blade of the food processor.

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