Alright, two things I bet you're wondering.
1) What makes you think Sasuke's Jewish?
Answer: Take a look at
Sasuke's eyes. If that isn't a Star of David, I don't know what is.
And 2) What the bloody hell's manischewitz?
Answer: Manischewitz is a brand of kosher wine, and it's fun to say.
Disclaimer: I do not mean to offend anyone's faith with this post. Except Kishimoto, for who from issues 384 to 402, has practically worshipped Sasuke.