Method

• 1.
  To make the fries, grate potato into long strips using the coarse side of a box grater. Place in a clean tea towel and squeeze to extract excess liquid. Heat 2cm sunflower oil in a heavy-based frypan over medium-high heat. Fry potato, in batches, for 2 minutes or until crisp, then drain on paper towel. Keep warm.
• 2.
  Drizzle steak with olive oil and season. Heat a heavy-based frypan over high heat, then add steak and cook for 3-4 minutes each side until slightly charred. Combine rum, maple syrup, vinegar and mustard in a bowl, then add to pan and cook steak, basting with sauce, for a further 1 minute each side or until glazed. Remove from pan and rest, loosely covered with foil, for 5 minutes. Cook sauce for a further 1 minute or until reduced and thickened.

• 3.
  Thinly slice steak, then drizzle generously with sauce and serve with fries.