This classic French onion soup from the Constantia Glen kitchen features on the menu of their tasting room and is a real crowd-pleaser. The team suggests pairing with the Constantia Glen THREE 2017, a classic blend of Merlot, Cabernet Franc and Cabernet Sauvignon that stands up well to the beefy flavours and caramelised onions of the soup.

Constantia Glen French Onion Soup Recipe

3 tablespoons butter
2 tablespoons olive oil
1,5 kg white onions, thinly sliced
1 teaspoon salt
3 tablespoons sugar
2 litres homemade beef stock or good quality bought stock
1 cup red wine or sherry
French baguette slices
2 cups grated Gruyere cheese

  • Heat a heavy saucepan over moderate heat. Add the butter and oil.
  • Stir in the onions, cover and cook slowly for ± 15 minutes until translucent. Add the salt and sugar and stir. Increase to medium-high heat. Cook for 25 minutes, stirring frequently until dark brown in colour.
  • Remove from the heat and add the stock. Bring to a simmer and add the wine.
    Simmer on low heat for 1 hour.
  • Taste for seasoning. Prepare melted gruyere toast and serve with the soup.