Mom's Ham and Pea Soup

Name: Mom's Ham and Pea Soup
Cuisine: World Cuisine
Ingredients: 1 smoked ham hock (about 1 lb/500 g); 1 tablespoon vegetable oil; 1 large onion , finely chopped; 2 each carrots and stalks celery, finely chopped; 2 cloves garlic , minced; 2 bay leaves; 1/2 teaspoon each salt and pepper; 4 cups chicken stock; 2 cups dry green or yellow split peas; 3 green onions , thinly sliced