01 - In a bowl, combine chicken livers, 2 tablespoons soy sauce, and half the minced garlic. Marinate for 10 minutes.
02 - Heat cooking oil in a large skillet over medium heat. Sauté onion, remaining garlic, and ginger until aromatic.
03 - Add marinated chicken livers and cook for 2 to 3 minutes, turning occasionally until just browned.
04 - Pour in remaining soy sauce, vinegar, water, bay leaf, peppercorns, and sugar. Bring to a gentle boil, then reduce heat and simmer uncovered for 10 to 12 minutes until the livers are fully cooked and the sauce reaches desired consistency.
05 - Taste and adjust seasoning if necessary. Discard the bay leaf.
06 - Transfer chicken livers and sauce to a serving dish. Garnish with sliced spring onions if preferred. Serve hot alongside steamed rice.