Porkpocalypse II: Caitlin's Potato Salad

My roommate makes a dilly, tangy potato salad out of red potatoes that is a crowd pleaser.

She's available for catering. Look her up on Facebook.

Caitlin's Dilly Potato Salad:

• 5 lbs of boiled red potatoes, cut into 1" pieces.
• 1/2 cups of mayonnaise.
• 1/2 cups of buttermilk.
• 1 tablespoon of Dijon mustard.
• 1 cup of celery, chopped (I prefer to use only the hearts, leaves included).
• 1/2 large red onion, diced.
• 3-4 stalks of green onion, chopped.
• Salt and pepper to taste.
• Fists full of chopped, fresh dill (up to half a cup); or up to 1/4 cup of dry dill.

ETA: