Step 1

In a 12-inch frying pan, preferably cast iron, melt the butter over medium heat and swirl to coat the bottom of the pan. Add the potatoes and onion and sauté just until coated with the butter, about 1 minute. Cover and cook to steam the potatoes until they are almost fork-tender, about 7 minutes.

Step 2

Add the celery, stir briefly, and then re-cover and cook for 3 minutes longer. Uncover the pan; increase the heat to medium-high; and add the dill, thyme, salt, and pepper. Cook, stirring frequently, until the potatoes are lightly browned, 15 to 20 minutes.

Step 3

Add the salmon and parsley and cook just until the salmon is heated through. Using a heat-resistant rubber spatula, stir the mixture gently, being careful not to break up the salmon pieces. Taste and adjust the seasoning. Serve immediately, passing the hot-pepper sauce at the table.