We are familiar with the topic of pouring & dosing. As a manufacturer, we have been producing bottle pourers from various materials for decades. E.g. made of brass with special coating, stainless steel and plastic. Regarding the corks, you can choose between natural, silicone and polyethylene corks. The fields of application extend to spirits and vinegar and oil. Metering pourers, which immediately measure a certain amount of liquid, round out the range. Hand wash recommended, for all common spirits, also for sour drinks and vinegar, suitable for 0.7-1 Lt. bottles.