Chopped kalamata olives, for serving (optional) For the salad:
1 English cucumber, quartered lengthwise and chopped
2 medium Roma tomatoes, seeded and chopped
8 to 10 narrow strips of thinly sliced red onion
1/4 cup (60 ml) lemon juice (about 1 large lemon)
2 cloves garlic
2 tablespoons (30 ml) extra-virgin olive oil
3/4 teaspoon sea salt
1/4 teaspoon black pepper
1/4 teaspoon dried oregano
1 Trim the roast of any unwanted fat and place on a large plate. Rub the salt and pepper into the meat on all sides.
2 In a small bowl, combine the rest of the roast ingredients (except the peperoncini peppers, lettuce, and olives) to make a paste. Rub the paste over the entire roast, then cover it with plastic wrap and let it marinate, chilled, for 8 to 24 hours.
3 Place the roast in a 4- or 6-quart (3. 8 or 5. 7 liter) slow cooker.
Cover and cook on low for 8 to 9 hours or on high for 4 to 5 hours. The beef should be tender and pull apart easily with a fork.
4 When the roast is nearly finished, prep the salad by combining the cucumber, tomatoes, and onion in a medium bowl.
Whisk the remaining salad ingredients together in a measuring cup and pour over the salad.
Toss everything together to coat well.
Taste, and add more salt if needed.
Cover and chill until ready to serve.
5 When the beef is finished cooking, it should pull apart easily with a fork.
Transfer the roast to a large plate or platter and shred it into bite-sized pieces. Return the meat to the slow cooker with the peperoncini peppers and toss it around with a pair of tongs so that the beef and peperoncini are combined and everything is coated with the cooking juices.
6 Assemble the wraps by placing a small amount of beef inside a lettuce leaf, top it with a spoonful or two of the salad, and sprinkle with kalamata olives.