Cioppino with oregano

1/4 cup olive oil 1 large onion , chopped 1 large green pepper , chopped 2 garlic cloves , minced 1 (28 ounce) can crushed tomatoes 1/3 cup tomato puree 1/2[...]

1/2 cup olive oil 1 white onion 2 large shallots , finely chopped 3 bell peppers , finely chopped (green, yellow, red) 8 cloves garlic , finely chopped 1[...]