Combine the apple cider vinegar, water, salt, and sugar in a small saucepot and simmer to dissolve. As it heats, slice the cucumber, onion, and jalapeno's thinly. Once the brine simmers, remove from heat and combine everything into a heat safe container. Pickle for at least 4 hours in the fridge.
Pork Marinade
In a blender, combine garlic, soy sauce, honey, rice wine vinegar, ginger, beer, and sesame oil. Buzz to combine. Add marinade to large freezer bag with pork and marinade for at least 4 hours also in the fridge.
Sriracha Mayo
Combine mayo and sriracha. No secret here.
Final Cooking
Heat a grill to medium heat, or heat your oven to 400 deg F. Grill/roast pork until heated through at 145 deg F or until crusty and awesome.
As meat cooks, slice rolls. Gently hollow out rolls (more room for meat!), slather with mayo, pickles, and cilantro leaves. Stuff with the pork, and try not to get any on your shirt.