Although Sliquid personal lubricant is somewhat obscure, the reviews are glowing.  I have not tried it myself, but I would guess it to be the best of the best.  Reviewers say it isn’t sticky, it stays where you put it, and it doesn’t taste bad.

(Do note that although Sliquid sells this and several other formulations of Natural products, they also sell silicone-based lubes.  Be sure you’re buying what you mean to buy!)