Two hours. Bottled milk tea is made on site, and the price tag indicates that it should be consumed within 2 hours, so it has a shelf life of 2 hours. Bottled Milk Tea is milk tea served in a glass bottle. The milk tea is elegantly presented in a square glass bottle, with a straw standing upright in the center of the bottle. The bottle is emblazoned with a blue Morandi font, as if the color is also one of the ingredients of the milk tea.