Let me share my recipe for my mother's basic Cuban sofrito:

1 medium onion (diced)

3 garlic cloves (crushed)

1/2 green bell pepper

1 tbsp. of extra virgin olive oil

a dash of white vinegar

1 tsp ground cumin

1/4 tsp ground oregano

1/2 cup of tomato sauce

salt & pepper to taste

sweat the onion and garlic in the olive oil until they start to release there essential oils and aroma. Add the bell pepper and stir. Add the cumin and oregano, stir. Add the tomato sauce, stir. Add a dash of white vinegar, and lastly, season with salt and pepper to taste. This sofrito mixture will freeze easily and keep until needed. It is the rock on which all Cuban meals start!