1.   Corks had to be pressed flush and deep inside a longer bottleneck to avoid leakage and spoilage, and only corkscrews could get them out.

2.   I just knew that eventually the cork had to be put in the jug.

3.   Some professional tasters believe that even good corks have a subtle effect on the taste of good wine.

4.   Some natural corks have a thin wax coating, so that the cork can be removed easily.

5.   The cork has the same level of protection against leakage and oxidation as real cork, he said.

6.   The corks have a waxy-feeling surface that apparently provides a better seal and makes removal easier.