Madeira Sauce

• 1 small onion, finely chopped
• 2 fluid ounces madeira wine
• 27 fluid ounces beef stock
• 12 ounce butter

1. Saute the onions in a hot pan until they are well browned.
2. Add the Madeira.
3. Reduce the liquid by half, add the stock and then reduce by half again.
4. Season.
5. Pass through a sieve, then add the butter.
6. Serve warm.

onion, fluid ounces madeira wine, beef, butter

Taken from www.food.com/recipe/madeira-sauce-370834 (may not work)