Heat the oil in a saucepan, add the tomatoes, scallions, garlic, ground cumin and cook gently for 10 minutes, stirring until softened.
Reduce the heat to low, add the salt and , cook for 10 minutes more, stirring occasionally until the sauce has thickened. Check and adjust the seasoning.
Video
Notes
*Keep in the fridge in a sealed container up to 1 week.