Start with your avocado! Cut around the avocado ( you won’t be able to cut through because of the large pit in the middle) once you have cut around take both sides and twist apart. Take the pit out with your knife by hitting it on the pit, when your knife is in twist and pull, the pit will come with the knife.
Scoop out your avocado into a bowl, add your red onion, sour cream, mayonnaise, buttermilk, and white vinegar. Mix it all together until well blended and smooth.
Add in your spices: salt, dried parsley, onion powder, dill weed, garlic powder and black pepper. Stir in and taste to make sure you don’t want to add anything extra in.
Gently fold in the tomatoes, we don’t want to add the tomatoes in earlier because we don’t want to mash them. Then voila! Sauce is ready for assembly, place in the fridge to keep chilled.