Pure Homemade Collagen Powder

Equipment

• 8 to 10-quart heavy-bottomed stockpot, slow cooker, or roaster oven
• Rimmed heavy baking sheet
• Fine-mesh stainless steel sieve
• Multi-layer cheesecloth or unbleached nut milk bag
• 9×13-inch glass baking dish (for chilling gelatin sheet)
• Food dehydrator with solid silicone non-stick fruit-leather sheets (or an oven with a low dehydrate setting at $55^\circ\text{C}–60^\circ\text{C}$ )
• High-speed blender (such as a Vitamix or Blendtec) or dedicated dry-spice/grain mill
• Fine sifter or flour sifter
• Airtight glass mason jar with an airtight rubber gasket

Ingredients

• Collagen-Rich Grass-Fed Beef Bones: 5 to 6 lbs (approx. 2.3 to 2.7 kg) Crucial Selection: Choose high-cartilage cuts such as beef knuckle bones, marrow bones, oxtail, or split beef feet (calves’ feet). Gelatin and type I/III collagen are concentrated heavily in joints, tendons, and cartilage.

• Function: The mild acetic acid penetrates dense bone matrix to pull out calcium, magnesium, phosphorus, and structural collagen proteins without altering final flavor.

Instructions

1. Blanch the Bones (Purification Step)

1. Place the raw bones into a large stockpot and cover them with cold tap water. Set over high heat and bring to a rolling boil for 15 minutes. A grey, foamy scum will float to the surface; this contains impurities, blood residues, and coagulated surface albumin. Drain the bones completely into a sink and rinse each bone under warm running water to remove all clinging residue. Wash out the stockpot thoroughly.

2. High-Heat Roasting

1. Preheat your oven to $220^\circ\text{C}$ ( $425^\circ\text{F}$ ). Arrange the rinsed bones across a rimmed baking sheet. Roast for 45 minutes, turning them once at the 25-minute mark, until deep amber-brown and fragrant. This step develops rich flavor while rendering out excess surface tallow.

3. The Mineral & Acid Soak

1. Transfer the roasted bones into your clean stockpot or 8-quart slow cooker. Pour in 1/4 cup of raw apple cider vinegar. Add enough cold filtered water to submerge the bones by 2 inches. Let the bones sit undisturbed in the cold acidic water at room temperature for 30 minutes before applying heat.

4. The 24-Hour Extraction (Low Heat Intensity)

1. Turn the heat to medium-low and slowly bring the liquid to a bare simmer. As soon as small bubbles begin to rise to the surface, immediately drop the heat to the lowest setting. Cover tightly.
2. Maintain a slow, steady temperature between $85^\circ\text{C}$ and $90^\circ\text{C}$ ( $185^\circ\text{F}–195^\circ\text{F}$ ). The liquid should not boil; rapid boiling breaks down collagen peptides into weak fragments and emulsifies fat into the broth. Simmer continuously for 24 to 36 hours . Check every 8 hours and top off with warm filtered water only if bones become exposed.

5. Double Filtration

1. Turn off the heat. Using tongs, remove the spent bones (the joint cartilage should be completely dissolved, and bones will feel noticeably lighter).
2. Pour the hot liquid through a fine-mesh colander lined with 3 layers of damp cheesecloth into a large clean pot or bowl. Allow the liquid to strain through naturally without pressing down on any remaining debris.

6. Reduction (Concentration Phase)

1. Pour the strained liquid back into a wide, clean stockpot. Place over medium heat without a lid. Simmer gently for 2 to 3 hours , allowing water to evaporate until the liquid reduces by roughly two-thirds to three-quarters, leaving approximately 4 to 5 cups of deeply amber, syrupy concentrate.

7. Chill & Defat

1. Pour the concentrated broth into a 9×13-inch glass baking dish. Allow it to cool on your counter for 1 hour, then transfer it uncovered to the refrigerator for 6 to 8 hours (or overnight).
2. Once chilled, the broth will set into a firm, bouncy gelatin block. A hard, solid white layer of beef tallow will rise and solidify on top. Using a flat spatula or butter knife, lift and scrape away the entire white fat cap, leaving behind only the translucent, amber gelatin block. Wipe the surface with a paper towel dampened with warm water to remove any lingering grease droplets.

8. Dehydration (Low Convection Intensity)

1. Dehydrator Method (Recommended): Cut the firm gelatin into thin strips or scoop it into thin ribbons. Spread the gelatin thinly across dehydrator trays lined with non-stick silicone sheets. Set the dehydrator to $55^\circ\text{C}–60^\circ\text{C}$ ( $130^\circ\text{F}–140^\circ\text{F}$ ) . Dehydrate for 12 to 16 hours . As moisture leaves, the strips will shrink and harden into brittle, glass-like amber shards that snap cleanly when bent.
2. Oven Alternative: Spread thinly on parchment-lined baking sheets. Set oven to its lowest warming setting ( $60^\circ\text{C}–75^\circ\text{C}$ / $140^\circ\text{F}–170^\circ\text{F}$ ) with the oven door propped open 1 inch with a wooden spoon to vent humidity. Dry for 14 to 18 hours until brittle.

9. Milling and Sifting

1. Break the bone-dry gelatin shards into smaller dime-sized pieces. Transfer them into a high-speed blender container or dedicated dry grain mill.
2. Blend on high speed in 20-second bursts for 1 to 2 minutes until pulverized into a pale, flour-like powder. Pour the powder through a fine-mesh flour sifter into a bowl to catch any unmilled granules. Return larger granules to the blender and pulse again until uniformly powdery.

Nutrition

Calories: 55 kcal — · Protein: (Pure Collagen Peptides) 14.0 g 28% · Fat: 0.0 g 0% · Carbohydrates: 0.0 g 0% Dietary · Saturated Fat: 0.0 g 0% · Fiber: 0.0 g 0% · Sugar: 0.0 g — · Sodium: 45 mg 2%