Required Amount of Matzah and Wine for the Seder: Difference between revisions

## Rabbi Mordechai Willig holds that a Revi’it is 2.5 fl oz (75cc). <ref> Rabbi Mordechai Willig  (“The Shiurim of Seder Night” min 1-10, and Pesach To-Go 5771 p. 60) holds that strictly speaking the size of an egg with its shell is 50 cc, and the [[Revi'it]] is 1.5 eggs with its shell, resulting in a Revi'it of 2.54 fl oz. </ref>

## Rav Ovadia Yosef writes that a Revi’it is 2.7 fl oz (81cc). <ref>Rav Ovadia Yosef (Chazon Ovadia p. 16) writes that the Revi'it is 81cc. This is based on the measurements of Rav Chaim Noeh (Shiurei Tzion p. 69) with slight adjustments. </ref>

## Rabbi Shimon Eider (Halachos of Pesach p. 229) writes that according to his measurements, the Revi’it is 3.0 fl oz. <ref>Halachos of [[Pesach]] (Rabbi Shimon Eider, Chapter 20, Sec D 5, pg 228-230) writes that since the four cups are Derabbanan one may have the smaller measurement which is measuring by eggs and not by thumbs and according to his calculation a Reviyit should be 3 oz and if one is unable to have a Reviyit one fulfills one's obligation with a majority of a Reviyit. See also Weekly Halacha (by Rabbi Neustadt, http://www.torah.org/advanced/weekly-halacha/5760/tazria.html) who writes that one may rely on the view of Rav Chaim Noeh who holds that 3 oz is sufficient being that the cups of wine are Derabbanan. </ref>

## Rabbi Dovid Feinstein (Kol Dodi Haggadah, 5730, p. 4) writes that based on measuring large eggs a Revi’it is fl 3.3 oz. <ref>In the 5745 edition, however, he says that the Revi’it is fl 2.9 oz. See also Rabbi Yisroel Bodner (Halachos of K’zayis p. 24 n. 24) who writes that he spoke to Rav Dovid Feinstein about how he arrived at his measurements and was told that his father, Rav Moshe Feinstein, didn't measure it himself but rather a student measured 'large' eggs and came up with 2.2 fl oz per egg. Rav Dovid added, if he, Rav Bodner, arrived at a smaller measure with his own measurements he should follow that. Rav Bodner writes that according to his measurements the average egg was 55cc (1.92 fl oz). Nonetheless, in terms of Bracha Achrona Rav Bodner (p. 26) follows the measurements of Rav Chaim Noeh who measured the average egg to be 57cc. </ref>