To a pint-size Mason jar or a medium size bowl, add mayonnaise, buttermilk, lemon juice, chopped cilantro, chopped chives (or tops of green onions), vinegar, and two dashes of Worcestershire sauce.
Next add crumbled blue cheese, pepper, and salt.
If using a Mason jar, tighten the lid and shake to mix the ingredients. If using a bowl, whisk the ingredients together.
Do a taste test and add more salt if needed.
Store covered in the refrigerator until just before serving. Mix the ingredients again just before serving. Can be served right after making it or chilled.