Ingredients (8)

Kosher salt

1/2 teaspoon (4g) baking soda

4 pounds (about 2 kg) 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 fresh rosemary leaves , finely chopped

3 medium cloves garlic, minced

Freshly ground black pepper

Small handful fresh parsley leaves , minced