The trick with corn soup is to harness the sweetness of the corn when it's raw, and the earthy, starchy notes when it's cooked. To clean the corn of its silk, use a damp, sturdy kitchen towel to wipe the cobs. Fun fact: For each kernel of corn on a cob, there is one piece of silk—so that makes for a lot of cleaning! I serve this soup cold, and it's both refreshing and satisfying. Make ahead and let it get super cold before serving. You can also puree all of the soup so it's completely smooth, or gently heat and serve warm instead of chilled!