Superior design: provides an accurate dash when full or almost empty, barware essential: this 4.4 Oz bitters bottle is the tool you need to present drinks with style and flair; ideal for use in your home bar, distillery, or restaurant, easy to clean: to maximize the performance and longevity of your barfly products, hand washing with mild soap and warm water is recommended, but glass products are dishwasher-safe. Avoid detergents containing bleach or heavy chlorination.