My Tzatziki Potato Salad Is Always Gone In Minutes

Name: My Tzatziki Potato Salad Is Always Gone In Minutes
Ingredients: 2 pounds small Yukon gold potatoes , scrubbed; 8 cups water; 1/4 cup Diamond Crystal kosher salt or 3 tablespoons Morton kosher salt, plus more to taste; 2 tablespoons extra-virgin olive oil , plus more for drizzling; 2 garlic cloves , finely grated; 1/2 cup plain Greek yogurt; 1/2 cup fresh dill , chopped and divided; 1 Persian cucumber; 1 tablespoon fresh lemon juice , from about 1/2 lemon; 1/4 teaspoon freshly ground black pepper