These summaries describe various wines produced by Cantina Riondo in Italy:
1) The documents describe several sparkling and still wines made from grapes grown in Veneto and Piedmont, including Prosecco, Pinot Grigio, Amarone, and Moscato varieties.
2) The wines are produced from the family vineyards of Cantina Riondo located in various Italian regions known for wine production.
3) The documents provide information on the grapes, vintage years, tasting notes, and production details of the various wines.