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U.S. measurements first, metric equivalents in parentheses. Conversions are approximate; oz means weight ounces, not fluid ounces.
- 2 lb (900 g) waxy potatoes (such as Yukon Gold or red potatoes), scrubbed - 4 kippered herring fillets, approx. 3.5 oz (100 g) each - 4 tbsp (60 g) unsalted butter - 1 large onion, thinly sliced (about 8 oz (225 g)) - 2 tbsp (30 ml) malt vinegar or malt-based splash vinegar - 1 tbsp (15 ml) lemon juice (optional) - 2 tbsp (8 g) fresh parsley, chopped - 1/2 tsp (2.5 g) freshly ground black pepper - 1/2 tsp (2.5 g) sea salt (use sparingly if herrin is very salty) - 2 tbsp (30 ml) milk or cream (optional, for mashed spuds) - 1 tbsp (15 ml) vegetable oil (for pan-frying herrin)
- 2 lb (900 g) waxy potatoes (such as Yukon Gold or red potatoes), scrubbed - 4 kippered herring fillets, approx. 3.5 oz (100 g) each - 4 tbsp (60 g) unsalted butter - 1 large onion, thinly sliced (about 8 oz / 225 g) - 2 tbsp (30 ml) malt vinegar or malt-based splash vinegar - 1 tbsp (15 ml) lemon juice (optional) - 2 tbsp (8 g) fresh parsley, chopped - 1/2 tsp (2.5 g) freshly ground black pepper - 1/2 tsp (2.5 g) sea salt (use sparingly if herrin is very salty) - 2 tbsp (30 ml) milk or cream (optional, for mashed spuds) - 1 tbsp (15 ml) vegetable oil (for pan-frying herrin)
1. Step 1: Place whole potatoes in a large pot, cover with cold salted water, bring to a boil, and simmer until tender when pierced, about 15–20 minutes depending on size. Drain and keep warm. If you prefer mashed spuds, mash with 2 tbsp (30 ml) milk or cream and 1 tbsp (15 g) butter; season lightly with salt and pepper. 2. Step 2: While potatoes cook, rinse kippered herring briefly under cold water to remove excess surface salt and pat dry. Heat 1 tbsp (15 ml) vegetable oil in a heavy skillet over medium heat. Add fillets skin-side down and fry until browned and heated through, about 2–3 minutes per side; remove and keep warm. 3. Step 3: In the same skillet, reduce heat to low and add 4 tbsp (60 g) butter. Add sliced onion and cook slowly, stirring occasionally, until soft and lightly caramelized, about 10–12 minutes. Stir in 2 tbsp (30 ml) malt vinegar and 1 tbsp (15 ml) lemon juice (if using) and cook 1–2 minutes to deglaze and slightly reduce. 4. Step 4: Taste the onion-butter for seasoning; add up to 1/2 tsp (2.5 g) sea salt only if necessary, and 1/2 tsp (2.5 g) black pepper. Stir in chopped parsley. 5. Step 5: To serve, divide boiled or mashed potatoes among 4 plates, top each portion with a kippered herring fillet, and spoon warm onion-butter and parsley over the top. Serve immediately with extra malt vinegar at the table if desired.
Per serving | Servings: 4
Nutrition estimated: November 5, 2026
*Values are estimates based on USDA data and mathematical calculations. Actual values may vary. Where data are unavailable, those contributions are excluded. Calories, Carbohydrates, Protein, Fat, Saturated fat, Cholesterol, Fiber, Sugar, Sodium, Potassium, Calcium, Iron, Vitamin A, Vitamin C and Vitamin D are known subtotals. Missing contributions are unknown, not zero.