Making your own spaghetti sauce from scratch is a rewarding kitchen project, especially when you have a treasured recipe like Aunt Mer’s. Using fresh or frozen tomatoes puréed to perfection forms the base of this sauce. If you start with frozen tomatoes, you'll find the cooking time is reduced since much of the water is released during thawing, which speeds up the thickening process. Fresh tomatoes work too, but they require a longer simmer to reach the desired consistency. The balance of ingredients in Aunt Mer’s sauce is key—onions, peppers, and a carefully measured mix of basil, oregano, garlic, and celery seed bring layers of flavor that complement the natural sweetness of tomatoes. The addition of tomato paste, or alternatively homemade paste made from juicing tomato pulp, intensifies the richness. To get the perfect thickness, simmer the sauce uncovered in a large stockpot and stir occasionally. It’s important to cook the sauce long enough for flavors to meld beautifully while evaporating excess liquid. Once the sauce is done, traditional water bath canning ensures it’s shelf stable. Adjust the processing time to your altitude for safe preservation. Investing in kitchen tools like a good vegetable strainer or a KitchenAid attachment can simplify tomato purée preparation. These tools save time and effort and are perfect for handling large quantities from a garden harvest. This recipe not only delivers authentic flavor but also allows you to enjoy homegrown tomatoes long after the growing season ends. Whether served over spaghetti or used as a base for other dishes, Aunt Mer’s Spaghetti Sauce is a beloved addition to any kitchen pantry.