The Seder night is the only time when there is a positive obligation to eat matzah. The beginning of the Haggadah says we eat matzah to remember what our ancestors ate in Egypt. Rabban Gamliel gives a completely different reason – when our ancestors were freed they didn’t have time for the dough to rise.
On Rosh Chodesh Nisan Bnei Yisrael were commanded to eat matzah on Pesach. If the reason for matzah is because the dough didn’t have time to rise if they received the commandment earlier and made the matzah earlier (they didn’t make the matzah on the night of Pesach)!
Egg matzah can’t be used for the seder because it’s not lechem oni. What about the rest of the holiday? The Rama rules that matzah made with other liquids such as juice can’t be eaten on Pesach since the fermentation process for egg matzah may be accelerated.
This shiur is sponsored by Mel David.
Recorded at OU Israel’s L’Ayla Rosh Chodesh Nisan 5779 Women’s Event