A bottle is a small container with a neck that is narrower than the body and a "mouth." Bottles are often made of glass, plastic or aluminum, and typically used to store liquids. e.g. water, milk, soft drinks, beer, wine, cooking oil (for both cooking and as fuel), medicine, liquid soap, shampoo, ink, etc.For some bottles a deposit is paid, which is returned after returning the bottle to the retailer. For other glass bottles there is often separate garbage collection for recycling.A device used to close the mouth of a bottle is called a bottle cap (external), or stopper (internal). A bottle can also be sealed using induction sealing .