what is "kasha"?

several episodes have mentioned the smell of "kasha". what exactally is this?

-> "kasha" is also short for the yiddish term Kasha Varnishkis, which is -> main dish kasha is used in, and that is what smells. It is delicious -> is a side dish consisting of bowtie noodles, fried kasha, and fried -> onions.

Stop you're making me hungry . :)