Try this as a lighter alternative to dairy-heavy chowder-type corn soups. Serve chilled if you’d like, and feel free to doctor it up with more spices of your choosing.
Cut summer squash crosswise into 1/2-inch-thick slices. Shuck corn and, working over a bowl, cut kernels from cobs. Halve cobs. Chop shallots and mince garlic. Wearing rubber gloves, chop chile, with seeds if desired.
In a 5-quart heavy kettle combine all ingredients (including cobs) except water and cook over moderate heat, stirring, 3 minutes. Stir in water and simmer mixture until squash is very tender, about 15 minutes. Discard cobs. In a blender puree mixture in batches until smooth (use caution when blending hot liquids), transferring to another bowl. Season soup with salt and pepper. Divide soup between 2 bowls and garnish with corn, chiles, cilantro, small dollops of sour cream, and thin slices of summer squash.