Chia seeds are small round seeds, and can be black, brown and white in color. They are harvested from a flowering plant in the mint family known as Salvia hispanica. It's native to parts of Mexico and Guatemala. Edible chia seeds are closely related to the chia plants made popular by Chia Pets, but they are not the same seed. A gel forms around the chia seed when mixed with liquid, which gives chia beverages their distinctive texture. Chia seeds can absorb up to 12 times their weight in liquid, which makes them useful in keeping baked goods moist.