Wine glasses need to be held at the base of the stem between your thumb, forefinger and middle finger. Your other fingers will naturally rest between the bowl and base.
Never hold the bowl of the wine glass as you will heat up your wine.
Small sips of wine are recommended.
The natural oils from our fingers, or residue from having eaten finger foods, can leave fingerprints, so it’s best to always hold the stem of the glass.
Ladies who wear lipstick can leave marks on the glass. Wetting your lips before drinking can prevent lipstick marks. If this is difficult, then drinking from the same stained area is advisable.
Serving Wine to Guests
You can tie a napkin around the wine bottle you are serving. This will stop the drips on the table linen or even the guests and to make sure the bottle will not slip through your hands due to condensation.
If you are the host or hostess, you will be serving your guests from their right sides. As the hostess or host, you will ensure that everyone’s glass is filled.
The rule of thumb when pouring, is to pour below half a glass (100-125ml or around 4 liquid ounces) of wine each time. At a restaurant, this should be done by your server, who will make sure that your glasses always have wine in them.
See my article: http://etiquipedia.blogspot.com/2020/08/australian-winery-etiquette-and-more.html