Is there allowed to be rice in a salt shaker on shabbat or yom tov?
Background: I was under the impression that the answer to this question is no, as for something not to be considered בורר (separating), it needs to be immediate, by hand, and taking the good from the bad. This example lacks the middle one.
Another thought was that it would be מרקד (sifting) as that is what the salt shaker head is doing.
However, when I asked someone this question, they claimed that it was not a problem based on something in shemirat shabbat k'hilcheta (2nd edition) about coffee strainers (if I remember correctly, can't seem to find it now). The claim was also that even if this was not allowed on shabbat, it was not the case for yom tov