Shrimp and Vegetable Stir-Fry Recipe

2 tablespoons vegetable oil

2 cloves garlic, minced

1 medium red onion, sliced

500 grams shrimp, large, peeled, and deveined

250 grams green beans, sliced into 1/2-inch pieces

2 tablespoons oyster sauce

salt, to taste

ground black pepper, to taste

steamed rice, to serve