How To Make Hash Rosin (Start to Finish)
April 18, 20250
Making hash rosin is a solventless process that extracts potent, flavorful cannabis concentrate using heat and pressure. Here’s a step-by-step guide from start to finish:
Equipment Needed
-
High-quality bubble hash (starting material, ideally 5- or 6-star full-melt hash)
-
Rosin press (hydraulic or pneumatic, capable of 500-1000 PSI)
-
Micron rosin bags (25-37 micron for best filtration)
-
Parchment paper
-
Pre-press mold (to shape hash)
-
Freeze dryer or parchment-lined tray (for drying hash)
-
Oven or heat mat (for decarboxylation, optional)
-
Dabber tool (for collection)
-
Gloves (for hygiene)
-
Timer and thermometer (for precision)
Step-by-Step Process
-
Prepare Bubble Hash
-
Start with high-quality bubble hash (fresh-frozen cannabis yields best results).
-
If not already prepared, make bubble hash using ice water extraction (bubble bags, 25-160 micron screens).
-
Dry the hash thoroughly:
-
Use a freeze dryer for best quality (preserves terpenes).
-
Alternatively, spread hash thinly on parchment paper in a cool, dark, low-humidity environment for 2-5 days until fully dry.
-
-
Store dry hash in an airtight container in a cool, dark place until ready to press.
-
-
Decarboxylate (Optional)
-
If you plan to use the rosin for edibles, decarboxylate the hash to activate THC.
-
Preheat oven to 220°F (104°C).
-
Spread hash evenly on parchment paper and heat for 25-30 minutes.
-
Let cool before proceeding.
-
-
Pre-Press the Hash
-
Weigh out 5-15 grams of dry hash (smaller amounts are easier for beginners).
-
Place hash into a 25- or 37-micron rosin bag. Fill to about 50-75% capacity to avoid blowouts.
-
Use a pre-press mold to compact the hash into a dense puck or rectangle. This ensures even pressing and prevents bag ruptures.
-
Gently tamp down to remove air pockets.
-
-
Set Up the Rosin Press
-
Preheat the press to 180-220°F (82-104°C). Lower temps (180-190°F) preserve terpenes for better flavor; higher temps (200-220°F) increase yield but may reduce quality.
-
Cut parchment paper into a square or rectangle, fold in half, and place the rosin bag in the center.
-
Ensure plates are clean and aligned.
-
-
Press the Hash
-
Place the parchment with the rosin bag between the heated plates.
-
Slowly apply pressure (start at 500 PSI, increase to 800-1000 PSI for micron bags).
-
Press for 60-120 seconds. Watch for rosin to flow onto the parchment.
-
First 30 seconds: Apply light pressure to warm the hash.
-
After 30 seconds: Gradually increase to full pressure.
-
-
Stop if no more rosin flows or if the bag blows out (overfilling or too much pressure causes this).
-
For maximum yield, do a second press at slightly higher temp (add 10°F) for 30-60 seconds.
-
-
Collect the Rosin
-
Let the parchment cool for 1-2 minutes (or place in a fridge for 30 seconds for easier collection).
-
Use a dabber tool to scrape the rosin off the parchment.
-
Collect into a glass jar or silicone container.
-
Note: Fresh rosin may be sappy or oily; it will solidify as it cools.
-
-
Clean Up and Store
-
Dispose of used rosin bag and parchment.
-
Store rosin in an airtight glass jar in a cool, dark place (fridge or freezer for long-term storage).
-
For best flavor, use within 1-2 months; potency can last 6+ months if stored properly.
-
Tips for Success
-
Quality Matters: Start with high-quality, full-melt bubble hash for best results.
-
Temperature Control: Experiment between 180-220°F to balance flavor and yield.
-
Pressure: Too much pressure can cause blowouts; too little reduces yield. Aim for 800-1000 PSI for micron bags.
-
Micron Size: 25-micron bags filter better but yield less; 37-micron bags allow more flow but may let some plant material through.
-
Hygiene: Wear gloves and work in a clean environment to avoid contamination.
-
Experiment: Adjust temp, pressure, and press time based on strain and desired consistency (sappy, buddery, or waxy).
Expected Yield
-
Yield depends on hash quality, strain, and technique.
-
Typically, 50-80% of the hash weight is converted to rosin (e.g., 10g hash yields 5-8g rosin).
-
Lower temps may yield less but preserve more flavor.
Safety Notes
-
Ensure proper ventilation when heating cannabis.
-
Handle hot press plates with care to avoid burns.
-
Use food-grade micron bags to avoid chemical contamination.
For visual guidance, search for “hash rosin pressing tutorial” on platforms like YouTube or check cannabis extraction forums for user tips.