2 cupschicken stockpreferable homemade but I've used the organic cartons successfully
16ozsour cream
1/2cupplain yogurt
1/4cupsugartry for less
2Tbsplemon juice
2tspchampagne vinegaryou might try a balsamic too
1 1/2tspfreshly ground pepper
2cupscucumberseeds removed (or not)
1/2 cupscallionswhite and green parts
2tbsp fresh dillplus more for garnish
kosher salt
Instructions
Wash the beets and if using the Instant Pot place on the trivet. Secure the lid and hit pressure cook on high for 13 minutes. Release the pressure carefully. Remove the beets with tongs and allow to cool til you can handle them. Keep 1 1/2 cups of the beet cooking juice for the soup and put aside. Remove the skins and ends and dice the beets into 1/4" dice
Meanwhile in a large bowl place the rest of the ingredients plus the beet juice and whisk til there are no clumps of sour cream. Place in the freezer if you're in a hurry or put in the fridge if you have more time. Chill ingredients thoroughly.
When the beets are cool enough add them to the chilling bowl. Soup needs to be COLD. Garnish with dill you've set aside.
Notes
Once I forgot the cucumber and the soup was fine - but it's better with them.