Q. On above question, (2439. Eating shalosh seudos after sunset), if I do follow the Mishna Berura and others opinion to bedieved wash after the shkia in need, can I eat more than a beitza (egg-full volume of challah) or do I have to limit myself to eat only enough to be yotze?
Until how many minutes can one wash bedieved after the shekia in our Toronto latitude?
A. Responsa Oz Nidberu (13: 22) and Ze Hashulchan (299) maintain that one should limit himself to eat only as much as needed for complying with the mitzva of eating the third meal. However many Poskim omit that requirement.
Horav Shlomo Miller' Shlit'a opinion is that one may eat more than a beitza volume if he desires.
In regard to the time the Rov's opinion is thirteen and a half minutes.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit'a