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Seared tuna steaks with smashed new potatoes, garlic green beans & saffron mayonnaise

  • People

    Serves 4

  • Prep Time

    20 min.

  • Cooking Time

    1 h

  • Difficulty

    Easy

  • BBQ Temperature

    250°C / Tuna: 48–52°C

  • Method

    Direct Heat / Griddle Cooking

Ingredients
Instructions

the Ingredients

Tuna Steak

For the Tuna

  • Completed step 4 tuna steaks, approx. 3cm thick
  • Completed step 2 tbsp olive oil
  • Completed step Sea salt and freshly ground black pepper
  • Completed step 1 lemon, cut into wedges

For the Saffron Mayonnaise

  • Completed step 150g mayonnaise
  • Completed step 1 small garlic clove, grated
  • Completed step 1 small pinch saffron strands
  • Completed step 1 tsp Dijon mustard
  • Completed step 1 tbsp lemon juice
  • Completed step 1 tsp lemon zest
  • Completed step Sea salt and black pepper

For the Smashed New Potatoes

  • Completed step 800g golden new potatoes
  • Completed step 2 tbsp olive oil
  • Completed step 1 tsp sea salt
  • Completed step 1/2 tsp black pepper
  • Completed step 1 tsp garlic granules
  • Completed step 1 tbsp chopped parsley

For the Garlic Green Beans

  • Completed step 250g fine green beans
  • Completed step 1 tbsp olive oil
  • Completed step 2 garlic cloves, finely sliced
  • Completed step 1 tbsp chopped parsley
  • Completed step Sea salt and black pepper

Special Equipment

  • Griddle starter set
  • Large saucepan
  • Griddle spatula

Instructions

Perfectly seared tuna steaks cooked hot and fast on the griddle, served with crispy smashed golden potatoes, garlicky green beans and a vibrant saffron garlic mayonnaise. A Mediterranean-inspired seafood dish packed with freshness and flavour. 

    IN THE KITCHEN:

  • Bring a saucepan of salted water to the boil. Add the new potatoes and cook for 15–18 minutes or until tender. Drain and allow to steam dry.
  • Pat the tuna steaks dry and leave at room temperature for 15–20 minutes before cooking.
  • Place the saffron into a small bowl with the warm water and leave to infuse for 5 minutes. Combine the mayonnaise, garlic, parsley, dill or basil, Dijon mustard, lemon juice, lemon zest and infused saffron in a blender or food processor. Blend until smooth and lightly green-gold in colour. Season to taste and chill.
  • Lightly crush the cooked potatoes using the bottom of a glass or potato masher. Toss with olive oil, salt, pepper and garlic granules.
  • Trim the green beans and prepare the garlic and parsley.
  • AT THE GRILL/BARBECUE:

  • Prepare the barbecue for direct heat cooking at approximately 250°C. Preheat the Weber Slate Griddle until hot.
  • Add a drizzle of oil to the griddle and place the smashed potatoes onto the hot surface. Cook for 8–10 minutes, turning occasionally until golden and crispy. Finish with chopped parsley and keep warm.
  • Add the green beans to the griddle with olive oil and cook for 4–5 minutes until lightly blistered but still vibrant. Add the garlic for the final minute and finish with parsley, salt and pepper.
  • Brush the tuna steaks with olive oil and season lightly with sea salt and black pepper.
  • Place the tuna steaks onto the hot griddle and sear for 1–2 minutes per side, depending on thickness, leaving the centre beautifully rare.
  • Remove the tuna and rest for 2–3 minutes.
  • Serve the tuna steaks alongside the smashed potatoes and garlic green beans, finished with a generous spoon of saffron herb mayonnaise and lemon wedges.
  • Weber Tip: Tuna loves high heat. A screaming hot griddle will give you a beautiful crust while keeping the centre tender and pink. For the best result, think steak rather than thin — hot, fast and slightly rare in the centre.

All of our recipes are created by our expert chefs at the Weber Grill Academy. View more inspirational recipes or book a course at the Grill Academy now.

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