With all the discussion about why it was Pessach when the angels visited Abraham, I forgot to mention why I included the reason in the first place (this quote is from AskMoses, but stands as only one representation of this type of statement you can also find at Chabad, Aish, and all the other orthodox-mystical-kiruv-sites):
It is a tradition that Abraham kept the entire Torah even though it had not yet been given. So he would have celebrated Passover even before the Jews had entered Egypt!
(Rabbi Yossi Marcus on AskMoses Why do we have three matzot on the Seder plate?)
Yeah, sure. Abraham celebrated Pesach and ate matzot. He probably wore a shtreimel. I don’t know what to say about this other than Abraham lived way before the exodus happened and there is just no rational reason why he should have baked matzot. So I’ll just conclude with a video on the topic (not specifically matzot and Abraham, but Eisav and the bracha on lentil stew and a-historic anti-rational views of the patriarchs in general):
"The Torah commands us to write a Sefer Torah. Did Yaakov observe that commandment?" – "Of course" – "So why didn’t he just take out this Sefer Torah and read it to find out that his son Yosef was alive and avoid all that heartache?"
"The gemara brings down a machlokes about whether the correct bracha on lentils is shehakol or mesonos. The best way to avoid any problems is to wash on bread."
"If Yakov knew the entire Torah, why didn’t he know the correct bracha for lentils. Why didn’t he know which of the opinions in Masechet Brachos was correct?
End of rant, have fun on Youtube.