I use this Pure Taste Mug every morning for my pour-over, and the ceramic-coated interior really does keep flavors from lingering. Coffee tastes clean, and when I switch to tea there's no weird aftertaste. The triple insulation keeps drinks cold for hours, and the slip-proof silicone bottom means it stays put on my desk. The sliding lid is shatterproof and easy to use, and the flat sides make it comfortable to grip. The two-toned color looks great too. BPA free is a nice bonus.