California Salsa

1/4 C fresh cilantro, chopped
1/3 medium onion, diced small
1 tsp fresh lemon juice
6 tomatoes, diced
1 serrano chile pepper, diced small
1 tsp cider vinegar
1 tsp salt

We add:
1/2 can black beans, rinsed
1/2 C frozen corn, rinsed with warm water
1 avacado, chunked

Chop and combine all ingredients, and chill to blend flavors. We usually add more salt. It is super delicious.