Souvlaki (soo-vlah-kee), meaning little skewers in greek, are skewers of meat such as pork, lamb, and chicken that are marinated in a wonderful red wine mixture and then grilled. Souvlakia (the plural of souvlaki) are traditionally wrapped in pita bread and then topped with a variety of condiments such as lettuce, tomato, onion, and, of course, the famed cucumber-and-yogurt-based tzatziki sauce. But they are also quite delicious without the pita and trimmings. This marinade recipe is for a pound of pork shoulder and will yield about four 9-inch skewers. You can multiply the recipe according to the number of people you are feeding. Make sure you begin the recipe ahead of time to allow at least 2 to 3 hours for the meat to marinate and really absorb the flavors. If using wooden skewers, you will need to soak them in water beforehand so they don't burn. Place them in a shallow dish of water while the pork is marinating.