This easy to make sauce can also be used as a marinade or a spread. Slideshow: More Portuguese Recipes
Preheat the grill.
Place the bell pepper on the grill over high heat and cook, turning occasionally, until blackened all over, 8 to 12 minutes. Place the bell pepper in a bowl and cover with a plate and let stand until warm. Discard the skin, stem and seeds from the pepper, reserving the flesh.
In a blender, puree the bell pepper, hot chiles, garlic, bay leaf, oil, vinegar, 1 teaspoon salt and 1/2 teaspoon pepper. Use the piri piri sauce on grilled meats and fish or spread on toast as an appetizer.