Melt 1/4 cup butter in a wok over medium heat.
Add 1 tablespoon minced garlic and sauté for about 30 seconds, or until fragrant.
Add the shrimp and cook for 1–2 minutes, just until half-cooked. Remove from the wok and set aside.
In the same wok, melt 1/2 cup butter.
Add chopped onions and cook for 30 seconds.
Add the remaining minced garlic and cook until fragrant.
Pour in oyster sauce, banana ketchup, and lemon juice. Stir until well combined.
Add sugar and let the sauce simmer for about 5 minutes.
Return the shrimp to the wok and simmer until fully cooked.
Add steamed corn and quail eggs. Mix everything gently but thoroughly until well coated with the sauce.
Serve hot with steamed rice and enjoy!