Ingredients (serves 6–8)

  • 3 large onions, thinly sliced
  • 50g butter (or beef dripping for extra depth)
  • 1 tbsp olive oil
  • 1 tbsp plain flour
  • 500ml beef or chicken stock (vegetable stock works too)
  • 100ml red wine (optional, for richness)
  • 1 tsp balsamic vinegar (balances sweetness)
  • Salt and black pepper, to taste

Method

Heat butter and oil in a large pan. Add onions and cook slowly over medium-low heat for 25–30 minutes, stirring often, until deep golden brown. Sprinkle flour over onions, stir well, and cook for 2 minutes to remove the raw taste. Gradually pour in stock, stirring constantly to avoid lumps. Add red wine and balsamic vinegar. Simmer gently for 10–15 minutes until thickened. Taste and adjust seasoning with salt and pepper.

Tips

Patience is key: Don’t rush the onions — slow cooking brings out their natural sweetness.

Extra depth: Add a splash of port or brandy for festive richness.

Silky finish: Strain gravy through a sieve if you prefer a smooth texture.

Variations

  • Vegetarian: Use vegetable stock and olive oil instead of butter/dripping.
  • Herby twist: Add thyme or bay leaves while simmering.
  • Make-ahead: Cook onions in advance, then finish with stock and wine on the day.

Storage & Reheat

Fridge: Keeps 3–4 days in a sealed container. Reheat gently in a pan, adding a splash of stock or water.

Freezer: Up to 2 months. Defrost overnight, then reheat slowly.

Reheat tip: Whisk while warming to restore smoothness.

This gravy is a showstopper — glossy, sweet-savoury, and the perfect partner for roast beef, turkey, or even veggie mains.