Put all ingredients in a food processor and puree until smooth.
Adjust seasonings after tasting, if desired.
Transfer to a container and store in the fridge until well chilled.
To serve, add a drizzle of sesame or olive oil and scatter with chopped parsley.
Roast beets ahead of time: Put beets, wrapped in foil, in a 400° oven for 45 minutes, or until fork-tender. Allow to cool enough to handle, then rub skins off with a paper towel.As an alternative to roasting your own beets, buy beets already cooked, or canned, for this recipe.