Likewise, was searching for pi at 3.141 without any luck.

When I heard the ingredient "Brown Sugar", was convinced they'd use:
Brown Sugar > Rolling Stones > Mick Jagger > Jade Jagger > Jade jewelry

But no - wrong again.

Was mistaken about Sweetie Pie (Tweety Pie) and Sylvester - thought of Sly Stalone but thought there must be 1000's of Stalone items for sale.

And the
American Pie movie > Alyson Hannigan > Also in Buffy
led to massive Slayer listings.

Mince Pie -> I think I'm gonna die.