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Grilled Fillet of Irish Hereford Prime Beef with Mashed Potatoes and Guinness Jus

Wed, 12 March 2025

Grilled Fillet of Irish Hereford Prime Beef with Mashed Potatoes and Guinness Jus

Ingredients:

For the Beef:

  • 2 Hereford prime beef fillets (around 200g each)
  • Olive oil for brushing
  • Salt and freshly ground black pepper

 

For the Mashed Potatoes:

  • 500g potatoes (peeled and cut into chunks)
  • 50g butter
  • 50g spring onions
  • 100ml milk (or cream for a richer mash)
  • Salt and freshly ground black pepper

 

For the Guinness Jus:

  • 250ml Guinness stout
  • 1 small onion (finely chopped)
  • 1 clove garlic (minced)
  • 1 tbsp brown sugar
  • 1 tbsp Worcestershire sauce
  • 1 tbsp balsamic vinegar
  • 1 tbsp tomato paste
  • 1 cup beef stock
  • Olive oil
  • Salt and freshly ground black pepper

 

Instructions:

Prepare the Mashed Potatoes:

  • Place potatoes in a large pot, cover with water, and add a pinch of salt.
  • Bring to a boil and cook until tender (about 15-20 minutes).
  • Drain the potatoes and return them to the pot.
  • Add butter, Spring onion, milk, salt, and pepper, then mash until smooth. Keep warm.

 

Prepare the Guinness Jus:

  • In a saucepan, heat a drizzle of olive oil over medium heat.
  • Add the chopped onion and garlic, and cook until softened.
  • Stir in the brown sugar, Worcestershire sauce, balsamic vinegar, and tomato paste.
  • Pour in the Guinness and beef stock, then bring to a boil.
  • Reduce heat and simmer until the sauce thickens (about 20 minutes).
  • Season with salt and pepper to taste. Keep warm.

 

Grill the Beef Fillets:

  • Preheat your grill to medium-high heat.
  • Brush the beef fillets with olive oil and season with salt and pepper.
  • Grill the fillets for about 4-5 minutes per side (or until they reach your desired level of doneness).
  • Let the beef rest for a few minutes before serving.

 

Plate and Serve:

  • Place a generous spoonful of mashed potatoes on each plate.
  • Top with the grilled beef fillet.
  • Drizzle the Guinness jus over the beef and potatoes.
  • Garnish with fresh herbs if desired, and serve immediately.

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