Stock is made primarily from bones, resulting in a richer, more gelatinous liquid, while broth is made primarily from meat and is lighter in flavor. To make a clear, gelatinous stock, simmer bones for a long time, skim impurities, and avoid boiling.
The key difference between stock and broth lies in their primary ingredients and resulting characteristics. Broth is typically made by simmering meat, vegetables, and sometimes bones in water. It's generally lighter in flavor and body and can be seasoned and consumed as is. Stock, on the other hand, is made primarily from bones, often roasted beforehand to enhance flavor. The long simmering process extracts collagen from the bones, which transforms into gelatin, giving the stock a richer, fuller body and a jelly-like consistency when chilled.
To make a clear, gelatinous beef or chicken stock, follow these steps:
Roast the Bones: For beef stock, roast beef bones (such as marrow bones, knuckle bones, or neck bones) at 400°F (200°C) for about 30-45 minutes, until browned. For chicken stock, roast chicken carcasses or backs at 375°F (190°C) for about 30 minutes. Roasting enhances the flavor and color of the stock.
Deglaze the Roasting Pan (Optional): After roasting, deglaze the pan with a cup of water or wine, scraping up any browned bits from the bottom. Add this flavorful liquid to your stockpot.
Combine Ingredients in a Stockpot: Place the roasted bones in a large stockpot. Add aromatics such as onions, carrots, celery (mirepoix), garlic, peppercorns, bay leaves, and parsley stems. Cover with cold water – cold water helps to extract more collagen from the bones.
Simmer Gently: Bring the water to a simmer over medium heat. Once simmering, reduce the heat to low and maintain a very gentle simmer. Avoid boiling, as this can emulsify fats and create a cloudy stock. For beef stock, simmer for 6-8 hours. For chicken stock, simmer for 4-6 hours. The longer the simmer, the more gelatin will be extracted.
Skim Impurities: During the simmering process, impurities will rise to the surface. Skim these off regularly with a fine-mesh skimmer or spoon. This is crucial for achieving a clear stock.
Strain the Stock: After simmering, carefully strain the stock through a fine-mesh sieve lined with cheesecloth. This will remove any remaining solids and ensure a clear final product.
Cool and Refrigerate: Allow the stock to cool slightly before transferring it to containers. Refrigerate overnight. As it cools, the stock should solidify into a jelly-like consistency due to the gelatin. If it doesn't fully gel, it's still perfectly usable, but it may not have extracted as much collagen.
Remove Fat: Once the stock is chilled, a layer of fat will solidify on the surface. Remove this layer before using the stock. This will result in a cleaner flavor and appearance.
Don't add salt to your stock while it's simmering. Salt concentrates as the liquid reduces, and you risk ending up with an overly salty stock. Season to taste when you use the stock in your final dish.