| 摘要 |
A bottle cap having a substance retained therein. The bottle cap engages threadedly a bottle containing a beverage therein. Such bottle cap includes a cylindrical member closed at a first end thereof and open at a second end thereof. There is a threaded portion disposed on an inner surface of the cylindrical member for engaging a threaded end of such bottle. A capsule like device is disposed inside the cylindrical member adjacent the closed end for retaining a substance to be dispensed into a beverage in such bottle. A device for piercing the capsule engages each of the threaded portion of the bottle cap and the capsule for piercing the capsule as the bottle cap is threaded onto such bottle thereby releasing contents of the capsule into such beverage for mixing therewith.
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