Dice pineapple, mango, and red onion into small pieces and toss in a bowl.

Slice 1/4 of jalapeno or serrano pepper into a few thin slices, add to fruit and stir around. (Your going to take them out before you eat the salsa.)

Grab a small handfull of cilantro and chop to desired finenest and add to bowl.

Cut lime into quarters and squeeze into bowl.

Toss everything around and salt to taste.

Add avocado now if using. Remove peppers and enjoy :)