The Best Crispy Roast Potatoes Ever

Name: The Best Crispy Roast Potatoes Ever
Prep time: 10 min
Cook time: 75 min
Total time: 85 min
Yield: 8
Ingredients: Kosher salt; 1/2 teaspoon (4g) baking soda; 4 pounds (about 2kg) russet or Yukon Gold potatoes, peeled and cut into quarters, sixths, or eighths, depending on size (see note); 5 tablespoons (75ml) extra-virgin olive oil, duck fat, goose fat, or beef fat; Small handful picked rosemary leaves, finely chopped; 3 medium cloves garlic, minced; Freshly ground black pepper; Small handful fresh parsley leaves, minced