Smoked Mackerel Smörgås with Senap and Dill

Scandinavian open-faced sandwich on crispbread — senap & dill sauce as the foundation, flaked smoked mackerel, soft-boiled egg, quick-pickled cucumber and red onion — DASH-friendly, serves 1, 15 minutes including egg time

Ingredients

Fresh

• 1 smoked peppered mackerel fillet, skin removed
• 1 egg
• ½ baby cucumber, mandolin-sliced very thin
• ¼ red onion, mandolin-sliced very thin
• 3 baby plum tomatoes, halved
• 1 tbsp fresh chives, finely sliced
• ½ fresh lemon, cut into wedges to serve

Storecupboard

• 2 Swedish crispbread rolls
• 2 tbsp Sås Senap & Dill sauce
• 1 tsp apple cider vinegar (for quick pickle)
• Freshly cracked black pepper

Method

1. Start the egg. Bring a small pan of water to a rolling boil. Lower the egg in carefully. Set a timer for 6 minutes 30 seconds. Have a bowl of cold water ready.
2. Quick-pickle the cucumber and onion. Tip the very thin slices into a small bowl, pour the apple cider vinegar over, toss with your fingers. Set aside — it’ll soften while everything else happens.
3. Flake the mackerel. Remove the skin (it lifts off easily on hot smoked mackerel) and gently flake the flesh into rough chunks with a fork. Bite-sized, not pulverised.
4. Stop and peel the egg. When the timer goes, transfer the egg straight to the cold water bowl. Leave 2 minutes. Peel under running water, starting at the wide end. Halve lengthways.
5. Spread the sauce base. Lay the crispbread on a plate. Spread the senap & dill sauce thickly across each — about 1 tbsp per crispbread. This is the foundation, not a smear.
6. Build the smörgås. Divide the flaked mackerel across the two crispbread. Lift the pickled cucumber and onion out of the bowl (leaving the vinegar behind) and drape over the mackerel. Tuck halved tomatoes around. Place an egg half, yolk-up, on each crispbread. Scatter chives generously. Crack black pepper across the top.
7. Serve. With the lemon wedges alongside — a squeeze over the egg right before eating brightens the whole plate.

Variations

• No mackerel: flaked tinned tuna or sardines work; mackerel is the best match for the sauce’s richness
• Bread alternative: wholemeal seeded bread also works — toast it lightly first so it can take the sauce without going soggy (~+80 kcal per slice)
• Splittable: eat one crispbread now (~240 kcal) and the other 90 minutes later if you’re not very hungry
• More substantial: add a layer of 0% Greek yoghurt mixed with a squeeze of lemon under the sauce (~+30 kcal)
• Smörgåsbord direction: for entertaining, expand to a spread with pickled herring, dilled potato salad, and rye bread

DASH Notes

• Smoked mackerel provides ~20g protein and significant omega-3s
• Mostly composed rather than cooked — light dinner or substantial lunch territory
• The senap & dill sauce is the calorie-dense element; 2 tbsp is the right dose
• Crispbread is high-fibre and slow-release; better than soft bread for blood sugar
• The pickled cucumber and onion add brightness without sodium

Notes

• Soft-boiled egg timing matters more than people credit. 6 minutes 30 seconds gives just-set white and yolk that’s set at the edge but soft in the middle. Cold water shock to stop the cook.
• Mandolin the cucumber and onion — paper-thin makes the difference between elegant drape and clunky slices.
• Don’t skip the quick pickle. 5 minutes in vinegar transforms raw onion from harsh to gentle and makes cucumber flexible enough to drape rather than sit awkwardly.
• The sauce is calorie-dense for a condiment — typical SAS senap & dill is ~250-280 kcal per 100g (oil and sugar). 2 tbsp is right for a portion; resist going thicker.
• It’s mildly sweet — there’s notable sugar in most versions of the sauce. Not significant at this dose but worth knowing.

Lunch — approximately 480 calories, ~25g protein, ~4g fibre