Directions

1. Place the summer squash, zucchini, vegetable stock, half-and-half, and tarragon into a large soup pot; bring to a boil, reduce heat to a simmer, and cook until the vegetables are tender, about 10 minutes.
2. Pour the soup into a blender, filling the pitcher no more than halfway full. Hold down the lid of the blender with a folded kitchen towel, and carefully start the blender, using a few quick pulses to get the soup moving before leaving it on to puree. Puree in batches until nearly smooth, and pour into a clean pot. Alternately, you can use a stick blender and puree the soup right in the cooking pot.
3. Sprinkle the Cheddar cheese into the hot soup, and allow to melt; stir until thoroughly mixed. Stir in the lemon juice, and top with a sprinkling of tarragon to serve.