Shaking waste off from foods

Shaking off the thin peel from the grains[1]: If one had kernels which were removed from before Shabbos from their stalks and are still mixed with their chaff[2] they may not be sifted [out] with a Kenon or plate due to a decree that one may come to sift them with a sieve and sifter in which case one is liable.

[Furthermore] even to do so with two hands, meaning to shake them from one hand to another in order to separate [the grains] from their thin peel [is forbidden]. Rather one is to sift them using a single hand placing into it all his strength in order to differ from the method that is used during the week (and thus not come to sift in a sifter). [See Q&A]


Summary-Shaking off the grains in order to remove their thin peels:[3]

Is forbidden to be done with a vessel, or even through shaking from one hand to another. Rather it may only be done through shaking it strongly in one hand, [and even then one may only do so to eat right away].



May one use his hand to sift food for right away use by spreading the fingers slightly apart and pouring the mixture over his hand?[4]

No as this is not considered the way of eating, and it is thus equivalent to using a strainer.[5]


May one shake grapes/peanuts/berries from hand to hand in order to get rid of the peels and stems?


[1] 319/10

[2] Chaff  is the inedible, dry, scaly protective casings of the seeds of [3] Halacha 10

[4] Shabbos Kihalacha Vol. 2 p. 381

[5] Vetzaruch Iyun how this differs from the case mentioned in Admur in which one sifts the waste out from the grains through shaking them in ones hands?

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