Heat the olive oil in a pan, add the onion, garlic, and dried oregano; cook over a low heat for 5-6 minutes until softened.
Add the cumin, hot pepper sauce and cook for a further 2 minutes.
Add the chopped tomatoes, tomato purée and cook for 10-15 minutes until all the juices have evaporated and the sofrito is thick in consistency. This will keep, cover