Wash your English cucumbers thoroughly under cold running water and dry them with a clean towel. Place them on your cutting board and slice them into thin, even coins using your sharp chef's knife.

Place the sliced cucumbers into a colander and sprinkle them lightly with a pinch of sea salt. Let them sit for five minutes, then gently pat them dry with a clean paper towel to remove water.

Whisk the sour cream, mayonnaise, rice vinegar, and white sugar together in your small glass mixing bowl. Stir the mixture vigorously until the sugar dissolves completely and the dressing looks perfectly smooth and creamy.

Measure the everything bagel seasoning, garlic powder, onion powder, sea salt, and black pepper into the dressing. Whisk everything together thoroughly so the savory spices are evenly distributed throughout the creamy sauce.

Transfer your dried cucumber slices into the large glass mixing bowl so you have plenty of room. Pour the seasoned creamy dressing directly over the top of the cucumbers using a rubber spatula.

Use your large mixing spoon to gently fold the cucumbers into the creamy dressing until coated. Make sure every single cucumber slice is completely covered in the delicious, savory sauce for maximum flavor.

Sprinkle the finely chopped fresh dill and toasted sesame seeds generously over the top of the salad. Place the bowl in the refrigerator for ten minutes to chill completely before serving it cold.