Il Grappolo Divino - Via della Vardesca (Via del Olmo) under the medieval Bell tower
Enoteca Molinari - Via Cernaia, 8 -Frascati. This shop is also a wine-bar and on Friday and Saturday evenings it's open until 1 am. Great selection of wines and wine accessories. Air conditioned. Closed on Thursday afternoons and all day Sunday. Phone +39069420539.
Casale Mattia Wine Shop
Via Borgo di San Rocca, 21. This shop sells only their own produce, so just the one label, but they also have their own award winning Spumante, two types of grappas, olive oil, sauces and jams. Closed on Sundays.
Oreste Molinari - Via Gioberti, open every day from 6am - 1pm then 4pm - 8 pm, small shop but great selection of local wines. It is also a bakery/caterer so take advantage and take away some biscuits, cakes, one of Oreste's famous ricotta tarts or some wine-jelly.