I remember the first time I ever saw basil seeds. It was in the drink aisle of a gigantic Asian grocery store. I did a double-take; basil seeds? In a drink? Obviously, I had to try one.
The beverage was citrusy and filled with floating, gelatinous seeds with the texture of tapioca. It was unfamiliar to me, and at first, I thought the texture was a little slimy—but I actually enjoyed it. The seeds gave the drink a bit of chewy substance, and imparted a light, herbaceous flavor to the lemony drink.