Wine glass for Lambrusco?
it's usually served in an old jelly jar or a modest tumbler, and you should chill it a little. crystal is way too fancy to drink lambrusco in the proper spirit (guzzled with salami and cheese). who knows?, maybe they'll be producing a barrique-aged super-cuvee for the u.s. market soon. there are lots of brands being imported now that i haven't tried yet, but i've had great wines from cleto chiarli, medici-ermete, and villa di corlo.
Glass: Riedel actually recommends their Zinfandel / Chianti wine glass which according to them was designed to flatter medium-bodied wines with elegant structure: "The rim directs the flow of wine to the mid-palate so you can experience the complex balance of fruit flavor acidity and tannins." (Good for: Bardolino, Beaujolais Nouveau, Carignan, Chianti, Cotes du Roussillon, Cotes du Ventoux, Dolcetto, Lambrusco, Montepulciano, Primitivo, Sangiovese, Zinfandel...you get the drift.)
Serving temperature: Best to serve Lambrusco very cold if you bought a DOC Lambrusco (min. alc. 10.5%). Most of these are supposed to have a nice, crisp acidity which you bring out best when you serve it well chilled.