During "Mystery Day", farmers bring in whatever produce they have, so you never know what you may find.
They'll be whipping up agua fresca, also called aguas de frutas, which is a fresh fruit drink that's popular in Mexico.
It's made with fruit, water, and sugar.
Charlie-Thornberry farmers will slice up their homegrown fruit and use that to make the drink.
They'll be serving free samples at the Downtown Wichita Falls Farmers Market tomorrow from 9 til 11 a.m.
There will also be a fruit carving and garnish demonstration, during which you can learn how to use your favorite fruits and veggies to make a beautiful centerpiece.
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