- If fresh tomatoes are out of season, you may substitute high-quality canned tomatoes (canned in their own juices without the addition of garlic, herbs, or extra seasonings, such as San Marzano). Canned whole tomatoes need to be cut/mashed up as directed in this recipe; canned diced tomatoes may be used as-is. If using canned tomatoes, drain and reserve the juice, only adding to the marinara sauce if more liquid is required.
- The amount of sugar, salt, pepper, and balsamic required will depend on the sweetness and acidity of the tomatoes you use. Start with the directed amounts of seasonings and add more as needed. For this particular batch of marinara, I ended up increasing the amounts to 1½ tablespoons sugar and ¾ teaspoon salt.