Hot Pressing vs Cold Pressing Rosin

THE PRESS CLUB ROSIN PRESSING TEMPERATURE GUIDE
THE PRESS CLUB TIPS AND TRICKS TODDE
Todde Philips   

🇺🇸 Retired veteran, father, rock-climbing expert & rosin connoisseur

Adjusting rosin plates to optimal temperatures allows rosin extractors to achieve high yields while maintaining exceptional quality. Due to the variety of variables in pressing rosin, there is no exact formula for temperatures to use during rosin extraction. However, temperature ranges provide great guidelines when first getting to know how a certain source material will squish. 

Within normal ranges of pressing, cold pressing refers to pressing with temperatures on the lower side, while hot pressing is pressing with temperatures at the higher, hotter end of the spectrum. 

Cold Pressing and Hot Pressing both have their sets of advantages and disadvantages. A range of temperatures can be used for pressing various types of source materials, and you can get different results by experimenting with different temperatures. Consider the following ways your rosin may be affected by both hotter and colder temperatures at your rosin plates. 

Temperature Ranges for Hot Pressing vs Cold Pressing

 Here is a breakdown of Hot Pressing and Cold Pressing temperatures for the three types of cannabis source material:

Flower
Cold Pressing: 180-200
Hot Pressing: 200-220

Bubble Hash
Cold Pressing: 140-170
Hot Pressing: 170-200

Dry Sift
Cold Pressing: 140-170
Hot Pressing: 170-200

By aiming for either the cold end or the hot end of the temperature ranges, we can impact the quality of our rosin in different ways. 


How is Rosin Affected by Heat? 

The amount of heat used during extraction impacts the consistency, color, terpene content, and flavor of rosin. Cold Pressing and Hot Pressing affects those qualities in different ways. 

THE PRESS CLUB ROSIN PRESSING TEMPERATURE GUIDE

Consistency

Lower temperatures used during extraction tend to produce more of a buddery texture. High temperatures are more likely to produce a shatter, or taffy effect in consistency. Low temperature plus high pressure can be used to make THC-A diamonds. 

Consistency can be adjusted after extraction throughout the curing process as well, using either a cold curing or warm curing process

Color
Lower temperatures are more conducive to lighter color, while higher temperatures can lead to darker color.

Terpenes
Terpenes are relatively volatile and therefore lower temperatures optimize for terpene preservation. Higher temps are more likely to cause terpene loss during extraction.

 

THE PRESS CLUB ROSIN PRESSING TEMPERATURE GUIDE

Taste
Because lower temps can preserve more terpenes, this generally leads to better tasting rosin. High temps cause greater terpene loss, which has a negative effect on flavor. 

Yield
Lower temperatures are great for optimizing for flavor and consistency, but higher temperatures can help increase yield. 


Conclusion

We’ve considered the type of cannabis source material as the main factor in determining the amount of heat to use in extraction. However, the age of the source material, amount of moisture content, and the cultivar (strain) are all variables that impact how much heat is best for rosin extraction.  

Identifying a range and experimenting within that range is key to dialing in the right extraction inputs, including heat. 

Heat makes solventless extraction possible. Understanding the ripple effects of adjusting temperature, and how those changes work in combination with pressure, is one of the most interesting things to discover in the world of rosin. 

Gaining extraction experience will lead to a better feel for the dynamics between pressure and temperature

Keep pressing!

 

THE PRESS CLUB ROSIN STARTER GUIDE

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