1 large yellow onion, peeled and sliced with the grain, not against the grain as one would normally slice an onion. slice first in half, and then slice off sections a half inch wide at widest point.
2-3 bell peppers of various colors, stemmed, seeded, de-ribbed, sliced lengthwise into strips
salt
juice of 1 lime
2 tablespoons of olive oil
2 cloves garlic, peeled, minced
1/2 teaspoon ground cumin
1/2 fresh jalapeño pepper, seeded, ribs removed, finely chopped (be careful not to touch your eyes or anywhere near your eyes after handling a jalapeño pepper!)