Olive oil plays an important role in Italian cooking, which explains why kitchens in Italy have such low carbon emissions. Fuel up on clean-burning capellini with today's Groupon: for $15, you get $30 worth of Italian cuisine at Allegro Grille in Maple Glen.

The chefs at Allegro Grille plate up a lively menu of culinary compositions authentic to both northern and southern Italy. Swimming with seafood, the popular zupetta appetizer bathes steamed shrimp, scallops, clams, mussels, and fresh tomatoes in a garlic white-wine sauce ($13.50), and the romantic ravioli dell amore comes stuffed with sautéed spinach and a three-cheese love triangle ($17.50). Sautéed chicken breast mingles among mushrooms, sun-dried tomatoes, and flambéd wine sauce in the pollo marsala ($19.50), and the veal Giuseppe's meaty medallions ($24.50) proudly decorate the jacket of the evening's hungriest hero.

Stone arches and columns surround diners in this Montgomery County restaurant, creating an authentic European ambience without the annoying bruschetta-snatching gondoliers.