01 - In a bowl, whisk together soy sauce, rice vinegar, maple syrup, and sesame oil. Add tempeh cubes and toss to coat evenly. Let marinate for at least 10 minutes to absorb flavors.
02 - In a separate bowl, combine cornstarch, salt, and black pepper. Dredge each marinated tempeh cube in the mixture, shaking off any excess coating.
03 - Heat a large nonstick skillet over medium-high heat with 1–2 tablespoons of oil. Fry tempeh cubes in batches until golden brown and crispy on all sides, approximately 3–4 minutes per side. Transfer to a paper towel-lined plate to drain.
04 - In the same skillet, add 2 tablespoons of neutral oil. Sauté minced garlic and ginger for 1 minute until fragrant and aromatic.
05 - Stir in chili paste, soy sauce, maple syrup (or brown sugar), and rice vinegar. Simmer the mixture for 2–3 minutes until slightly thickened and glossy.
06 - Return the crispy tempeh cubes to the skillet, tossing vigorously to coat evenly in the sauce. Cook for 1–2 minutes until heated through and the sauce becomes sticky.
07 - Transfer to a serving plate and garnish generously with sliced spring onions and toasted sesame seeds. Serve immediately while hot and crispy.