Schmaltz is the Yiddish word for rendered chicken fat. For Jews who keep kosher, schmaltz substitutes for butter when cooking meat. That’s important because, as everyone knows, butter makes everything taste better.
And if your “bubbeh” (Yiddish for grandmother; rhymes with tubby) wanted to give you something delicious, she would spread salted schmaltz on a bagel (Don’t knock it if you haven’t tried it). In other words, it adds flavor.
When I tell people to add schmaltz to a story, I mean that they need to add the flavoring that fills out the tale and makes it more interesting to the listener.
via speechworks.net
I have to admit the title got my attention first, but there's good advice here. Follow the link to see it all.