Salty soy and oyster sauce blend with sweet brown sugar and spicy chili garlic sauce to season these Asian-inspired sandwiches.
In a medium-size bowl, mix 2 tablespoons of the soy sauce, 1 tablespoon of the sugar, 1 tablespoon of the oyster sauce, the garlic, the ginger, 1 teaspoon of the chili garlic sauce and 1/2 teaspoon of the sesame oil. Add pork and toss to coat. Transfer to a resealable plastic bag, remove the air and let marinate in the refrigerator 4 to 4-1/2 hours.
Combine remaining 1 tablespoon soy sauce, 1 tablespoon brown sugar, the rice wine vinegar, mirin and mint; mix until sugar dissolves. Add cucumber and marinate for 10 to 15 minutes.
In a small bowl, blend mayonnaise with the remaining 1 tablespoon oyster sauce, 2 tablespoons chili garlic sauce and 1/2 teaspoon sesame oil. Let sit for 5 minutes.
In medium-size saute pan or on hot grill, cook meat to medium-rare, until it registers 145° on an instant-read thermometer, about 3 minutes. Transfer pork to a plate or platter.
Drizzle olive oil on rolls and brown lightly on grill or under broiler, about 2 minutes. Spread mayo onto each roll, dividing evenly. Place pork in roll, top with marinated cucumbers, lettuce and cilantro. Slice in half and serve.