Instructions: Trim roots and any wilted ends from green onions. The cut onions into 1-inch lengths, keeping green and white parts separate; set aside.

Heat oil in a 5- to 6-quart pan over medium-high heat. Add half the pork; cook, stirring, until well browned (about 10 minutes). Remove from pan and keep warm. Repeat with remaining pork.

Discard all but 1 tb drippings from pan. Add sliced onion to pan and cook, strring occasionally until soft (about 7 minutes). Return pork to pan and add soy, sake, water, and mirin. Bring to a boil; then reduce heat, cover, and simmer for 25 minutes. Add potatoes, white part of green onions, pepper, and sugar. Return to a boil; then reduce heat, cover, and simmer until pork and potatoes are tender when pierced (about 25 minutes). Garnish with tops of green onions.

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