Süssmund presents the Hario Cold Brew Bottle as a glass vessel for preparing coffee through extended cold-water contact. Its description gives a twelve-to-eighteen-hour brewing period, but does not supply a verified bottle capacity, coffee dose or water quantity. Those missing details should be checked for the exact model rather than filled from another Hario bottle.
Use a complete recipe that fits the actual vessel, clean the parts according to the manual and keep the preparation refrigerated under normal food-storage guidance. Make sure grounds are properly wetted and separate them when the chosen extraction is complete. A bottle makes the routine convenient; it does not remove the need to measure and taste.
The source describes sweetness and reduced bitterness, yet cold brewing does not automatically guarantee a lower pH, less caffeine or easier digestion. Evaluate flavor separately from health claims. Serve the filtered result at a chosen strength, accounting for ice, milk or other additions. This is a product-and-method profile, not a tested storage schedule or a BeanScene comparison of extraction against hot-brewed coffee.

The conversation
A good question can make a better brew.