Here at Planet Money,TradeEdge Exchange Thanksgiving is not just a time to feast on turkey, stuffing, mashed potatoes, green bean casseroles and pie(s). It's also a time to feast on economics. Today, we host a very Planet Money Thanksgiving feast, and solve a few economic questions along the way.

First: a turkey mystery. Around the holidays, demand for turkey at grocery stores goes up by as much as 750%. And when turkey demand is so high, you might think that the price of turkey would also go up. But data shows, the price of whole turkeys actually falls around the holidays; it goes down by around 20%. So what's going on? The answer has to do what might be special about supply and demand around the holidays.

We also reveal what is counted (and not counted) in the ways we measure the economy.

And we look to economics to help solve the perennial Thanksgiving dilemma: Where should each dinner guest sit? Who should sit next to whom?

This episode was hosted by Erika Beras and Jeff Guo. It was produced by James Sneed with an assist from Emma Peaslee, and edited by Jess Jiang. It was fact-checked by Sierra Juarez and engineered by Josh Newell.

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Music: Universal Music Production - "Icy Boy," "One Shot, and "We Here."