Cold Buttermilk Cucumber Soup

This is a great refreshing cold soup for the hot days of summer. The chili pepper or cayenne pepper is purely optional, but these kinds of soups often developed in the American South, where hot sauce or chilies are common additions to many foods. The extra virgin olive oil adds a wonderful finish. The shredded cucumber garnish adds a little texture, but it certainly isn't necessary, if you choose not to use it.

Ingredients (about 6 servings):

3 cups buttermilk
3 cups seedless cucumbers, peeled and chopped (or regular cucumbers, seeded)
3 inch piece peeled cucumber, shredded, for garnish
2 stalks celery 
2 garlic cloves, chopped
1/2 to 1 teaspoon cayenne pepper or red pepper flakes (or 1/2 to 1 jalapeño or serrano pepper)
1 teaspoon ground black pepper
1 teaspoon ground coriander
1 teaspoon celery salt
extra virgin olive oil for serving 
  
Add all but the shredded cucumber to a blender/food processor. Blend/process until smooth. Refrigerate for a few hours, until well chilled. Garnish each serving with some shredded cucumber and a drizzle of extra virgin olive oil.
  

WORD HISTORY:
Nebulous-This word, meaning "cloudy, hazy;" thus also, "unclear, vague," goes back to Indo European "nebhos," which meant, "mist, vapor, cloud, the heavens." This gave Latin the noun "nebula," meaning, "vapor, fog," which produced the adjective "nebulosus," meaning, "foggy, cloudy, misty." This was borrowed by English in the second half of the 1300s with the meaning, "misty, hazy, smoky." There may have been reinforcement from French "nébuleux," the French form from the Latin word "nebulosus." NOTE: The original Indo European form gave its Old Germanic offspring "nebulo," meaning, "fog, darkness." This gave Old English "nifol," meaning, "dark, gloomy." The same Germanic source gave German "Nebel" (fog, haze, smoke), Low German "Nevel" (mist), Dutch "nevel" (mist), Frisian once had "nevel" (fog, haze, mist) and Old Norse had "njola" (fog, mist, darkness) and Icelandic has (antiquated?) "nifl" (darkness).