I used low-sodium canned tomatoes and got this down to under 250mg of sodium. By using a little extra black pepper I disguised the lack of salt in the tomatoes (I used 1/4 teaspoon instead of 1/2.). I also used a base of mirepoix with red bell peppers to augment the tomatoes and add more flavor, and that added texture as well. I had Marsala on hand, so that stood in place of the white wine. It's a highly adaptable recipe.