Prepare the Bones: Rub chicken bones generously with oil and place them on a wire rack.
Roast the Bones: Roast bones in the oven at 425°F for 40-50 minutes until browned.
Combine Ingredients: Place roasted bones in a large pot and cover with water, about 1 inch above the bones.
Boil and Simmer: Bring to a boil, then reduce to a simmer.
Prepare Vegetables: Rough chop celery, carrots, and onion. Crush garlic.
Add Vegetables: Add chopped vegetables and crushed garlic to the pot.
Simmer with Herbs: Simmer for 90 minutes, adding fresh herbs in the last 30 minutes.
Strain the Stock: Strain through a colander, then through cheesecloth for a clearer stock.