If you have just a bit of the sour cream in the container go ahead and mix in all other ingredients until well combined. If you are working from a full tub just go ahead and mix in your serving bowl.
The longer it sits in the fridge, the better. All your flavors will marry and you will have a good consistent flavor throughout- anywhere from an hour to 2-3 days.
Recipe by Premeditated Leftovers™ at https://premeditatedleftovers.com/?p=32050