Place the oil in a deep saucepan over medium heat.Cook the onions and garlic until slightly translucent but not brown. Stir occansionally.
Mix in the orange and white puree, tomatoes, and tomato paste and bring to a boil. Lower the heat and simmer for 15-20 minuttes until sauce thickens. Move the sauce to a blender and puree in batches, or use an immersion blender inserted directly in the pot to puree sauce.
Stir in salt and a few grinds of pepper, to taste. Use immediately or store covered in the fridge for up to 1 week, or freeze for up to 6 months.
Pink Sauce Variation:.
Add 1/2-3/4 cup soy milk(or regular milk or vegetable broth) into sauce, mixing until well blended and continue to simmer to thicken the sauce. Pure sauce as instructed above.