Wash the cucumbers thoroughly and pat them dry.
Slice the cucumbers thinly using a sharp knife or mandoline.
In a large mixing bowl, combine sour cream and mayonnaise.
Add dill weed, garlic powder, lemon juice, salt, and pepper to the bowl.
Mix the dressing ingredients until smooth and well combined.
Gently fold the sliced cucumbers into the dressing.
Ensure the cucumbers are evenly coated with the creamy mixture.
Taste and adjust seasoning if necessary.
Chill the salad in the refrigerator for at least 30 minutes before serving.
Serve in a bowl, garnished with fresh mint leaves.