Ingredients

2 leeks, white and pale-green parts only, cut into 1-inch rounds, rinsed well 

2 carrots, cut into 1-inch rounds 

1 small onion, cut into 1-inch pieces 

3 garlic cloves 

8 cups water 

5 flat-leaf parsley sprigs 

2 thyme sprigs 

1 dried bay leaf 

2 teaspoons whole black peppercorns, crushed 

Preparation

Cook leeks, carrots, onion, and garlic, covered, stirring occasionally, in a medium saucepan over medium heat for 10 minutes.

Add water, parsley, thyme, bay leaf, and peppercorns. Raise heat to high. Bring to a boil. Reduce heat. Simmer, uncovered, for 30 minutes. Pour through a cheesecloth-lined strainer; discard solids.