In a separate bowl, whisk together sour cream, mayonnaise, fresh dill, vinegar and granulated sugar.
Pour over cucumbers and onions. Stir to thoroughly coat cucumbers and onions.
Cover bowl with plastic wrap and refrigerate 1 hour before serving.
Taste cucumbers and season with salt at this point if preferred. Stir before serving.
Video
Notes
Please refer to my FAQ’s (Frequently Asked Questions) and ingredient list above for other substitutions or for the answers to the most common questions.