In a large mixing bowl, cover dry peas with cold water and soak overnight, or at least for 1 hour.
Once the peas are soaked and doubled in size, rinse them well.
Add chicken stock and peas to a pot and bring to a boil. Simmer split peas for 45 minutes stirring occasionally.
Add onion to an oven and broil until golden and soft to add flavor.
Add potatoes, carrots, celery, onion and garlic to a pot. Cook, uncovered, for 15 minutes until vegetables are tender.
You can skim the foam from the peas that rises to the top. It is not harmful and, if left, it gets simply absorbed into the cooking liquid.
Add bay leaf, salt, pepper and parsley and stir. Turn off the heat and enjoy!