Hot buttered corn rice

Bahan-bahan (4 porsi)

• 50 g / 4 tbsp unsalted butter (, divided)
• 3 big garlic cloves (, finely minced (can use garlic press))
• 2 cups frozen corn ((no need to thaw), or fresh corn kernels (Note 1))
• 1/4 tsp cooking salt / kosher salt
• Pinch of pepper
• 1 cup long grain rice (, uncooked, not rinsed (Note 2))
• 1 1/2 cups low-sodium chicken stock/broth ((+ 2 tbsp extra if using fresh corn))
• 2 g reen onion stems (, finely sliced)