Homemade Beef Stock - cooking recipe

Ingredients

2 -4 lbs beef, bones
2 onions, chopped
3 cloves garlic, chopped
2 leeks, white part only,sliced
4 -6 carrots, scraped and sliced
2 -3 celery ribs, washed and chopped
1 bunch chopped parsley stems
black peppercorns
white peppercorns
red peppercorns
green peppercorn
bay leaf
thyme, to taste
rosemary, to taste
3 quarts water

Preparation

Roast the beef bones at 350\u00b0 Fahrenheit for 40 minutes.
Saute the onions in a little oil until they are all turning brown.
Combine all ingredients and simmer on low heat for at least 3 hours (may be cooked in a crockpot also).
After 3 hours, taste and adjust seasonings if desired.
Continue cooking on low heat, if desired - the longer you cook, the stronger the flavour will be.
Strain stock.
Allow to cool, and skim off any fat.
If not used immediately, store covered in refrigerator for up to 10 days, or freeze in plastic containers or ice cube trays.