Fry pork and garlic together in butter. Brown a little and add onions.
After 3 minutes, season with soy sauce.
Stir for another 3 minutes, then pour in pineapple juice (drained from tidbits) and 1/2 cup water.
Add MSG and salt. Cover and simmer over low fire until tender.
Thicken sauce with dissolved cornstarch. Lastly, add catsup, pineapple tidbits and bell peppers.
When it boils remove immediately from pan. Garnish with spring onions.