Abstract: A glass neck adapter can include universal threads to screw onto a standard conventional plastic beverage container or bottle. The glass neck adapter can be attached on a plastic bottle to allow a person drinking from the plastic bottle to feel the sensation of drinking out of a glass bottle when the lips of the drinker contact the glass mouth of the neck adapter mounted on the plastic bottle. Glass material can be molded into the shape of a glass bottle top with complementary threads to fit on a plastic bottle to define the neck adapter. The neck adapter can be made from a material selected from a group including a chemical composition at least substantially composed of soda lime glass, a PYREX® glass formulation, and borosilicate glass, each material capable of withstanding temperature changes and to resist cracking during transport and cleaning.