Ingredients:  
    2 tablespoons olive oil
    2 large sweet onions, roughly chopped
    1/2 cup tamarind paste
    2 tablespoons minced garlic
    2 tablespoons minced ginger
    2 jalapenos, seeds removed and minced
    1/4 cup chopped canned anchovies
    1/4 cup tomato paste
    2 whole cloves
    2 tablespoons freshly cracked black pepper
    1/2 cup dark corn syrup
    1 cup molasses
    3 cups white vinegar
    1 cup dark beer
    1/2 cup orange juice
    2 cups water
    1 lemon, thinly sliced
    1 lime, thinly sliced

Preparation:
Consider making your own Worcestershire sauce at home. It does contain a lot of ingredients, but the method is very simple and easy.

Heat the olive oil in a large saucepan and saute the chopped sweet onion until soft, about 7 minutes. Add the tamarind paste, garlic, ginger, and jalapenos. Cook over medium-low heat for another 5 minutes. Add anchovies, tomato paste, cloves, pepper, corn syrup, molasses, white vinegar, dark beer, orange juice, water, lemon, and lime. Stir to combine and bring to a boil. Reduce heat and simmer, stirring occasionally, for about 3 hours until thickened enough to coat the back of a spoon.

Strain Worcestershire sauce into a glass bottle and refrigerate.

Preparation Time:  15 min

Yield:  about 6 cups

Cooking Time:  3 h 15 min

Source:  www.homecooking.about.com