Heat the sesame oil in a large wok or skillet over medium-high heat.
Add the minced garlic and ginger, and sauté for about 1 minute until fragrant.
Add the sliced pork and cook until browned and cooked through, approximately 5-7 minutes.
Push the pork to one side of the wok and add the celery, carrots, and asparagus. Stir-fry for 3-4 minutes until the vegetables are tender-crisp.
In a small bowl, whisk together the soy sauce, rice vinegar, chili garlic sauce (if using), and erythritol until well combined.
Pour the sauce into the wok and toss everything together to coat evenly. Cook for an additional 2 minutes to allow the flavors to meld together.
Taste and adjust the seasoning with salt if necessary.
Remove from heat and garnish with fresh cilantro before serving.