A good glass in the cupboard is sufficient
Excerpt from BILD interview with Markus Del Monego, Germany's first sommelier world champion
So do we need a separate glass for each type of wine? "Not at all. A good all-round glass will do, too: it should be thin-walled and lie lightly on the lip so that it causes little discomfort, and it should also be bulbous and taper at the top."