A good glass in the cupboard is sufficient
Extract of BILD-Article with Markus Del Monego, Germanys first Sommelier Worldmaster
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 doesn't cause any discomfort, and it should also be bulbous and tapered at the top."