First, set your grill to medium-high heat (375°F/190°C). While waiting for it to heat up, crack your eggs into a bowl and beat them well. Set aside.
Take your whole eggplants and place them directly on the grill. Let them cook for about 3-4 minutes, then turn them over. Keep turning them every few minutes until the skin is completely charred and blackened all over. This usually takes 10-15 minutes. You'll know they're done when they feel very soft when you press them gently. Set them aside to cool until you can handle them comfortably.
While the eggplants are cooling, heat your pan over medium heat (350°F/175°C). Add your oil if using. Once the pan is hot, add your minced garlic. Let it cook until it turns light golden brown and smells fragrant, about 1-2 minutes.
Add your diced onions to the garlic. Stir them around and cook until they become clear and soft, about 3-4 minutes. Now add your quartered tomatoes and cook them until they become soft and a bit mushy, about 5-6 minutes.
By now your eggplants should be cool enough to handle. Peel off the charred skin - it should come off easily. Don't worry if a few black bits remain, they add to the smoky flavor.
Add your peeled eggplants to the pan with the garlic, onions, and tomatoes. Using your wooden spatula, gently mash the eggplants while they cook. Keep cooking and mashing for about 5 minutes.
Now comes the important part - pour your beaten eggs evenly over the eggplant mixture. Let them sit for just a few seconds, then gently stir everything together. Keep stirring slowly until the eggs are just set but still look creamy, about 3-4 minutes.
Add your salt and pepper to taste. Give everything one final gentle stir and cook for another 2-3 minutes until it reaches your preferred level of dryness.
Take the pan off the heat and let your Poki Poki rest for 2 minutes before serving. This helps the flavors come together perfectly.
Serve hot with rice, pandesal, or your preferred side dish. For extra flavor, serve with a side of spiced vinegar (suka at sili).