In a mason jar, or medium size glass pouring-type measuring cup, add milk and vinegar. Mix together. Let sit until the mixture thickens a little (curdles) (about 15 minutes).
For the Dressing:
To the Mason jar with the dressing base, add mayonnaise, buttermilk, crumbled blue cheese, granulated garlic, pepper and paprika. Whisk (or shake) the ingredients together.
Add salt to taste.
Serve right away or serve chilled over a wedge of iceberg lettuce and top with crumbled bacon, more blue cheese, and chopped green onions or chives.