All about our sewage:

Using benchmarks from a published scientific study, they were able to estimate that people in Seattle and a few outlying areas served by the sewage plant scarfed down the daily equivalent of about 160,000 butter- or chocolate-chip-type cookies and about 80,000 cookies containing cinnamon during the Thanksgiving weekend.

Also -

Natural vanilla showed the largest increase, "perhaps indicative of more home baking using natural vanilla", all from here.

Yay Seattle! Refuse that artificial crap & give the fish the real metronatural™ deal!