Heat oil in a cooking pot.
Once the oil is hot, saute garlic until brown.
Add ginger and onion, and cook for 2-3 minutes.
Put-in ox tripe, cow's small intestine and cow's heart.
Season with salt and pepper. Let it boil for 5 minutes.
Then add 3 cups of water, vinegar, calamansi extract, tamarind extract and bile. Boil for another 5 minutes.
Add another 2 cups of water, then put-in the chilies. Bring to a boil.
Serve while hot!