For some, the changing leaves are indicative of fall, while for others it’s that alluring scent of the wildly popular pumpkin spice latte (PSL) - a seasonal coffee drink that mysteriously gives you a burst of delicious pumpkin pie flavour without the hassle of baking or dish-washing.

But have you ever stopped to wonder how the PSL does it? Surprisingly, those iconic spices that go into a home-made pumpkin pie constitute less than 11 percent of what gives your fall beverage its incredible flavour.

We first learned about the amazing science behind the popular drink from food scientist Kantha Shelke from the Institute of Food Technologists.

Here are the facts:

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This article was originally published by Business Insider.

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