Adapted from [Homesick Texan|http://homesicktexan.blogspot.com/2011/06/chipotle-blue-cheese-dressing-recipe.html]
To a blender, add half of the bleu cheese, mayonnaise, buttermilk, worcestershire, garlic, chipotle, paprika, and vinegar. Whirl until smooth.
In a bowl, mix together remaining bleu cheese crumbles and sour cream. Add the blender mixture and stir to combine. Season with salt and pepper to taste.
Store covered in refrigerator for up to a week.