Abstract: Provided is a bottle comprising a water reservoir, a threaded neck having an opening, and a top reservoir in one embodiment including an upper portion, a lower portion releasably secured to the upper portion, a cylindrical coupling member projected downwardly from the lower portion and having internal threads secured to the neck, and a seal formed at a top of the coupling member and above the opening, the seal being adapted to separate the contents (e.g., powder or thick fluid) in the top reservoir from water in the water reservoir. Screwing down the top reservoir to lift the opening until the seal is broken will drop the contents in the top reservoir into the water reservoir to mix for making beverage.