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Export 6 ingredients for grocery delivery
Step 1
Cut the onion in half, then slice each half into very thin strips. Add the onion to a bowl and sprinkle with salt. Using your fingers, massage the salt into the onions to evenly distribute it. Set the onions aside to sweat for 10 minutes.
Step 2
While the onions are sweating, seed and de-vein the bell pepper and serrano chile. Slice them into thin strips.
Step 3
Place the pepper strips, lime juice and chopped cilantro into a bowl.
Step 4
Rinse the salted onions in cold water. Drain them well, and pat them dry. Add the onions to the bowl with the other ingredients. Mix to combine.
Step 5
Add the oil. Sprinkle with salt and pepper to taste. Mix to combine.
Step 6
Cover the salsa and let it marinate in the refrigerator for 10 minutes before serving.