Combine all ingredients in a glass bowl and stir to combine. (Start with a very small amount of jalapeno pepper and taste before adding more).
Season with salt and pepper.
Cover with plastic wrap and store in the refrigerator overnight or on the counter at room temperature for at least 30 minutes.
Serve with foil packet citrusy orange roughy or other minimally seasoned fish, chicken or pork recipe. This can also be served in place of regular salsa with tortilla chips.