America's birthday, Independence Day, July Fourth. Whatever you call it, this is a day for fun, fireworks, and low-key cookouts based on recipes — from appetizers through the night's final toast to America — that are cheap and easy to prepare. With the summer harvest coming in, ripe and ready fruits such as berries and watermelon, and vegetables like corn, peppers, and tomatoes sell for budget prices at the farmers market and deserve starring roles in holiday meals. Build them into a patriotic theme with an occasional boost from food coloring or red and blue sprinkles. And don't forget about dessert!