Heat oil in a pan and sauté garlic, onion, and ginger until fragrant.
Add squash and cook for 2–3 minutes.
Pour in coconut milk and water.
Bring to a gentle simmer and cook for about 10 minutes.
Add string beans and eggplant.
Season with fish sauce and pepper.
Simmer another 5–8 minutes until vegetables are tender.
Stir in leafy greens and cook 1–2 minutes more.
Serve hot with rice.
