1 c. soy sauce
6 tbsp. sugar
1/2 minced onion (4 tbsp.)
4 crushed garlic cloves (or 4 tsp. minced garlic)
2 tsp. ginger
4 tbsp. oil

Use boneless pork tenderloin. Mix ingredients and set meat in marinade for 6-48 hours - usually one day ahead. Keep turning so entire roast is soaked with marinade.

Bake at 350 degrees for time appropriate to size. Peel potatoes and place around pork. Pour marinade over potatoes and turn once while cooking. Also baste meat while cooking. You'll never cook pork any other way once you try this! People beg me to cook this!