Steps
1. In a bowl, toss beef slices with curry powder, salt, and pepper.
2. Heat oil in a pan over medium heat and sauté onion, garlic, and ginger until fragrant.
3. Add the beef and cook until browned on all sides.
4. Pour in coconut milk and simmer for 5 minutes until sauce thickens.
5. Adjust seasoning with salt and pepper.
6. Garnish with fresh cilantro if desired and serve hot.