Sofrito is a traditional Spanish cooking sauce. I usually have a container of Goya's in the freezer which I use in beans, which makes a great instant meal...instead of eating yet another pizza.
If you want to make your own and freeze here's the recipe:
2 medium green peppers, seeds removed
1 red sweet pepper, seeds removed
2 large tomatoes
2 medium onions, peeled
1 head of garlic, peeled
1 bunch cilantro leaves
1/2 bunch parsley leaves
Peel garlic and chop ingredients into sizes that are small enough to fit into a food processor or blender. If you freeze them into ice cube trays you need only add them to your food as needed.