I made this dressing to go with a wedge salad. It makes about 2 cups of dressing and takes only a few minutes.
1 cup full fat sour cream
4 oz. blue cheese, crumbled or shredded
1-1/2 tsp. lemon juice
¼ tsp. mustard powder
¼ tsp. freshly ground black pepper
¼ hot sauce (Tabasco, etc.)
½ cup full fat buttermilk
Mix together all the ingredients into a medium bowl.