Remove the husks from the tomatillos first. Wash them with cool water.
Add the tomatillos, serrano chiles, and small onion to a medium saucepan.
Cover the vegetables with enough water in the saucepan.
Bring the water in the saucepan to a boil on the stove.
Allow the ingredients to simmer until the color of the tomatillos changes and they become tender. This should take approximately 10 minutes.
Once the tomatillos have cooked, drain the water and transfer the boiled mixture to a blender or food processor.
Add Cilantro, White Sugar, Worcestershire Sauce, Chicken Bouillon, Mexican Oregano, Garlic Powder, and Salt in a blender or food processor.
Blend the ingredients until achieve a smooth and well-combined salsa consistency. This should take a few pulses.
In a saucepan, heat the corn oil over medium heat.
Pour the blended salsa mixture into the saucepan and bring it to a light boil.
While the salsa is heating, skim off any foam that forms on the surface.
Once the salsa reaches a light boil, reduce the heat to low and let it simmer for an additional 5 minutes, allowing the flavors to meld together.
Remove the saucepan from the heat and let the salsa cool slightly.
Serve warm with crispy tortilla chips and enjoy!