Heat the cooking oil in a cooking pot.
Once the oil becomes hot, sauté onion and ginger until the onion becomes soft.
Add the sliced liver. Continue to sauté for 2 minutes. This will remove the gamy taste and aroma. Remove the liver and temporarily place in a clean plate.
Put-in the garlic. Saute until color turns light brown.
Add-in the pork. Cook for 3 to 5 minutes.
Pour-in the beef broth. Let boil.
Put-in the lemongrass. Cover and simmer for 30 to 45 minutes.
Remove the lemongrass. Put-in the chayote and cooked liver. Continue to cook in medium heat for 3 to 5 minutes. Add water, if needed.
Add-in the green onion or onion leeks. Cook for 2 minutes.
Add salt and pepper to taste. You can also use fish sauce if you prefer.
Serve hot with rice.
Share and enjoy!