In a large skillet or wok, heat sesame oil over medium-high heat.
Add diced onions and cook until translucent, about 2-3 minutes.
Add ground meat to the skillet, breaking it apart with a spatula, and cook until browned and cooked through, approximately 5-7 minutes.
Stir in minced garlic and grated ginger, cooking for an additional 1-2 minutes until fragrant.
Add chopped water chestnuts to the skillet and stir to combine with the meat mixture.
In a separate bowl, mix together rice wine vinegar, soy sauce, hoisin sauce, and chili garlic sauce (or sriracha sauce). This creates your flavorful sauce.
Pour the sauce over the meat mixture in the skillet and stir well to ensure everything is coated evenly.
Add the coleslaw mix and grated carrots to the skillet. Stir-fry for about 3-4 minutes until the vegetables are slightly wilted but still crisp. Season with salt and black pepper to taste.
In a small bowl, mix together mayonnaise and sriracha sauce to make the sriracha mayo.
Serve the sesame pork stir-fry hot, garnished with black sesame seeds, thinly sliced green onions, and a drizzle of sriracha sauce and sriracha mayo if desired. Optionally, serve with a fried egg on top for added richness and flavor.