Sweat onion, celery, carrot, and garlic in oil until soft. Add crab base, pepper, Tabasco, and sherry. Cook to combine flavors. Add clam juice and heavy cream. Bring to a simmer. Puree with immersion blander. Add roux. Cook til soup thickens. Ladle out 2 quarts of soup into the vita-prep, add beets and puree. Add beet mixture back into soup in batches till desired color. Adjust seasoning. Puree in vita-prep in batches.