Wash the potatoes, add them to the pot, and cover with water.
Bring to boil, add a tablespoon of salt, partially cover, and cook for about 20-25 minutes until the potatoes are cooked through but keeping their shape.
Drain the potatoes in a colander and cool completely.
Chop the onions into half moons.
Chop the dill and parsley.
In a bowl, add minced garlic, mayonnaise, and sour cream and mix well together.
Check for seasoning and add salt and pepper to taste.
Once the potatoes are cooled off, you may cut the bigger ones in half and leave the smaller ones whole.
Add them to the bowl, add onions and herbs, and mix well.
Add garlic sauce and mix the salad well.
Transfer to a serving bowl and chill before serving.