Overview

A dish that turns everyday scraps into the star: pillowy ricotta gnocchi brightened with an herbaceous carrot‑top pesto and finished in a decadent Scotch‑smoked mackerel butter. The secret twists — clarifying carrot tops into a silky oil for the pesto and infusing butter with smoked mackerel to create a savory, oceanic beurre noisette — give this recipe an astonishing depth without being fussy. The crunchy honeyed rye dust and quick‑pickled radish add texture and lift.

Serves: 4
Hands‑on time: 50 minutes — Total time: 1 hour 20 minutes (includes resting + chilling)

Why this works (the secret twists)

• Carrot‑top oil extracts intensely green, vegetal flavor from carrot greens without their fibrous texture — it becomes the backbone of the pesto and aromatically elevates the gnocchi without tasting “grassy.”
• Scotch‑smoked mackerel butter is the bold finishing agent: the fish is gently smoked with a touch of peat, then cooked low and slow in butter so the marine umami infuses the fat, which browns to a fragrant, nutty sauce. It’s like a liquid, smoky sashimi that coats the gnocchi.
• Honeyed rye dust provides tempered sweetness and robust crunch — think of it as a savory‑sweet streusel that plays against the silky butter.

Ingredients

For the ricotta gnocchi

• 1 lb (450 g) full‑fat ricotta, well drained (ideally overnight in a sieve)
• 1 large egg
• 1 cup (100 g) all‑purpose flour, plus more for dusting
• 3 tbsp grated Parmigiano‑Reggiano
• 1 tsp flaky sea salt
• 1/4 tsp freshly grated nutmeg
• Zest of 1 lemon

For the carrot‑top oil & pesto (secret vegetal backbone)

• Greens from 2 large bunches of carrots (about 3 cups loosely packed, cleaned — remove thick stems)
• 3/4 cup neutral oil (grapeseed or sunflower)
• 1/2 cup finely toasted walnuts (or almonds)
• 1/3 cup grated Pecorino or Parmigiano
• 1 small garlic clove, blanched once in boiling water and shocked (optional, for milder garlic)
• Juice of 1/2 lemon
• Salt to taste (about 1/2 tsp)

For the Scotch‑smoked mackerel butter (secret finishing butter)

• 3 medium mackerel fillets, pinboned and skin on (about 10–12 oz / 300–350 g total)
• 1 tbsp Scotch whisky (optional)
• 8 tbsp (115 g) unsalted butter
• 1 tbsp olive oil
• 1 small shallot, very finely minced
• 1 tsp lemon juice
• Freshly ground black pepper

For the honeyed rye dust & accoutrements

• 1 cup rye breadcrumbs (from day‑old rye bread, blitzed fine)
• 2 tbsp unsalted butter
• 1 tbsp mild honey
• Quick pickled radish: 5–6 thinly sliced radishes, 1/4 cup rice vinegar, 2 tbsp sugar, 1/2 tsp salt
• Microgreens or baby herbs for garnish
• Flaky sea salt to finish

Equipment notes

• Blender or stick blender for pesto and carrot‑top oil infusion
• Smoking setup: small tabletop smoker, or a disposable tray with smoking chips and a grill cover. (Alternatively, use store‑bought smoked mackerel if you cannot smoke.)
• Fine sieve and silicone spatula
• Heavy skillet

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Method

1) Make the carrot‑top oil (the quiet magician)

1. Roughly chop the carrot tops (no need to be perfect). Place greens and neutral oil in a small saucepan. Gently warm to 140–160°F (60–70°C) — do not boil — and maintain for 20 minutes to extract color and aroma. Keep lid on.
2. Strain through a fine sieve lined with cheesecloth into a bowl, pressing to extract every last drop. Chill until the oil firms slightly and the green color brightens. Reserve 4 tbsp for the pesto and the rest for another use (or drizzle).

2) Quick pickle the radishes

1. Whisk rice vinegar, sugar and salt until dissolved. Add radish slices and chill while you continue. These will be ready in about 20 minutes.

3) Smoke the mackerel (secret umami)

1. Pat mackerel dry, season lightly. If using whisky, brush lightly. Smoke the fillets on a low heat (ideally 225–250°F / 107–121°C) for 10–15 minutes until cooked through and fragrant with smoke. If you don’t have a smoker, quickly broil with a small handful of soaked wood chips in foil beneath to add a touch of smoke, or use high‑quality smoked mackerel fillets from a good source.
2. Flake the smoked mackerel, removing skin if you prefer. Set aside.

4) Prepare the ricotta gnocchi dough

1. In a large bowl, combine the drained ricotta, egg, lemon zest, nutmeg and salt. Fold in the grated cheese.
2. Add 3/4 cup of flour and gently fold until a soft, slightly tacky dough forms. Add the remaining flour a tablespoon at a time only if dough is too wet — the dough should be pillowy, not dense. Overworking will toughen the gnocchi.
3. Turn onto a floured surface, divide into 6 pieces. Roll each into a rope about 1 inch (2.5 cm) thick. Cut into 1‑inch pieces and, if desired, roll lightly over a fork to create ridges. Chill on a floured tray while you finish sauces — this helps them hold shape.

5) Carrot‑top pesto

1. In a blender, combine toasted walnuts, cheese, blanched garlic, lemon juice and a pinch of salt. Pulse to combine.
2. With the blender running, stream in 4 tbsp of the chilled carrot‑top oil until you have a glossy, bright green pesto. Adjust seasoning. The oil keeps the pesto vivid and silky — do not substitute with plain oil.

6) Honeyed rye dust

1. In a skillet, melt butter, add breadcrumbs and toast over medium heat until deep golden and nutty, about 6–8 minutes.
2. Off heat, stir in honey and let cool; the crumbs will crisp. Blitz briefly in a food processor to make a coarse “dust.” Set aside.

7) Finish: make the Scotch‑smoked mackerel butter

1. In a skillet, warm 1 tbsp olive oil and sweat the minced shallot over low heat until translucent.
2. Add the flaked smoked mackerel and 2 tbsp butter, stirring to break down the fish and release oils. Add the remaining butter and cook gently until butter foams and begins to brown lightly — watch closely; you want a nutty aroma, not burned butter.
3. Stir in lemon juice and a few cracks of black pepper. Taste and adjust salt.

8) Cook the gnocchi and assemble

1. Bring a large pot of salted water to a simmer. Gently drop gnocchi in batches. They’re cooked when they float plus 20–30 seconds. Scoop out with a slotted spoon.
2. In a large skillet set over medium heat, swirl a tablespoon of the mackerel butter. Add a batch of gnocchi and toss to coat so they pick up some browning and carry the smoky flavor. Add a spoonful of carrot‑top pesto and a splash of reserved carrot‑top oil if needed — the pesto should cling and tint each gnoccho.
3. Transfer gnocchi to warm plates. Spoon warm mackerel butter over each portion, scatter quick‑picked radish, a generous sprinkle of honeyed rye dust, and finish with microgreens and flaky salt.

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Plating & Service

• Arrange gnocchi in a loose mound, finish with a glossy swipe of the mackerel butter across the plate.
• Scatter the honeyed rye dust deliberately for crunch contrast — imagine a savory streusel falling like confetti.
• Serve immediately so the butter stays warm and glossy. This pairs beautifully with a chilled, dry Riesling or a crisp Pilsner that can cut the butter’s richness.

Variations & Notes

• Vegetarian variation: replace smoked mackerel butter with browned butter studded with toasted capers and a small dose of soy reduction for umami. Use the same carrot‑top pesto to keep the bright herbaceousness.
• If carrot tops are not available, sub with equal parts basil and parsley and omit the carrot‑top oil step — but you lose the unique vegetal perfume. The carrot‑top oil is the single most distinctive element.
• Make‑ahead: you can smoke and flake the mackerel up to 24 hours ahead and keep refrigerated. Pesto also keeps 48 hours in the fridge.

Final tasting note

This plate is about contrast: pillow‑soft gnocchi, vivid green pesto, and that smoky, sea‑kissed butter that acts like a savory glaze. The honeyed rye dust is the unexpected crunch — sweet, toasty and grounding. The two secret techniques — extracting carotene‑rich flavor into oil, and infusing butter with Scotch‑smoked mackerel — are low‑effort, high‑impact moves any home cook can adopt to make a dish feel utterly restaurant‑worthy.

Enjoy the lift from the carrot tops — the best part of a root vegetable that most people throw away — transformed here into the soul of the plate.