Seared tuna with dill cucumbers and potato salad


  • Serves 6 - 8 people

A single large piece of tuna makes for a simple crowd-pleaser. Sashimi-quality tuna needs no cooking - we've just seared ours and rolled it in herbs. It could then be roasted to rare, or left as is, before serving with a simple potato salad and dill cucumbers.

Start this recipe a day ahead to pickle the cucumbers.

  • 1 tbsp olive oil
  • 1.5 kg piece of sashimi-quality tuna, skin off, bloodline trimmed
  • 1½ tbsp Dijon mustard
  • 1 cup finely chopped mixed soft herbs (such as chervil, chives, dill and flat-leaf parsley), plus extra to serve
  • Finely grated rind of 1 lemon, plus lemon wedges to serve
  • Dill cucumbers
  • 2 (or 500 gm) Lebanese cucumbers, halved and cut into chunks
  • 100 ml brown rice vinegar
  • 30 gm caster sugar
  • 2½ tbsp coarsely chopped dill
  • Potato salad
  • 1.5 kg desiree potatoes, cut into chunks
  • 60 ml (¼ cup) olive oil
  • Finely grated rind and juice of ½ lemon, or to taste
  • 2 golden shallots, finely chopped
  • 1 garlic clove, finely grated
  • 1 tbsp white wine vinegar
  • 1 tsp Dijon mustard
  • ½ cup (loosely packed) finely chopped flat-leaf parsley
01   For dill cucumbers, toss cucumbers and 2 tsp fine salt in a bowl to coat evenly and transfer to a colander to drain (15 minutes). Rinse, then pat dry with paper towels. Stir vinegar and sugar until sugar dissolves, add to cucumbers along with dill and season to taste with freshly ground pepper. Pack cucumbers into a sterile jar or container, pour in vinegar mixture to cover completely and refrigerate for at least a day before using. Cucumbers will keep refrigerated for 2 weeks.
02   For potato salad, cover potatoes with cold salted water in a saucepan, bring to the boil and cook until starting to crumble on the edges (15-20 minutes). Drain, return to pan, then add remaining ingredients, season generously and combine well. Cover and stand at room temperature if using on the same day, or refrigerate in an airtight container for up to a day (bring to room temperature before serving).
03   Bring tuna to room temperature (30 minutes). Heat oil in a saucepan over high heat, add tuna and sear each side until browned (1-1½ minutes each side). Remove from heat, pat dry with paper towels, then brush with mustard. Scatter herb mixture and rind on a tray, then roll tuna in herb mixture to coat evenly. Slice and serve tuna with potato salad and dill cucumbers, and scatter with extra chopped herbs.









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