SOFRITO: Make Your Own

1 onion
1 tomato
1 green pepper
2-3 cloves garlic
½ tsp oregano
water, if needed

Puree all of the ingredients in a blender, starting with the tomato. Add water, if needed, for easier blending. Cook the mixture over low heat for 30 minutes. It can be refrigerated for up to 3 weeks or frozen. If you freeze it in an ice cube tray, you can keep to cubes in a plastic bag and use as many as you need for future recipes.