Mix all ingredients together.
Depending on how thick or thin you want your dressing you'll have to add more mayo or milk. It's also best to use the dressing the next day, so store it in a container (like a mason jar) in the fridge to let the ingredients marinate/blend together.

1/2 cup plant based milk
1 cup vegan mayo
1/2 tsp dill
1/2 onion powder
1/2 tsp garlic powder
1/4 tsp black pepper
1 tsp chives
1/2 tsp white vinegar
1/2 tsp parsley flakes
1/4 tsp salt
1/2 tsp lemon juice