Patient education resource
Understanding Vape Cartridges
Distillate, live resin, live rosin, terpenes, and what actually matters for patients.
Common Vape Oils
Distillate
Highly refined THC oil, rebuilt with added terpenes
Cured/Live Resin
Solvent based extraction for a more complete plant profile
Live Rosin
Solventless extraction - Ice water hash pressed into oil
Distillate
Distillate is what is in the “standard” vape cart, and what you are typically buying unless you specifically choose otherwise. It is a highly refined, highly processed cannabis oil.
The starting material, cured cannabis, is heavily processed under high heat and refinement techniques designed to isolate THC for purity and consistency. In this process, most of the plant’s original compounds are removed, including natural terpenes and many minor cannabinoids. What remains is essentially a neutral, highly concentrated THC oil.
Because those original terpenes are lost during processing, they are added back in after extraction to restore flavor and influence the overall experience. This is where you will see labels like BDT, CDT, or sauce/sauz on vape products.
These terpenes, and their source, are also why two vape carts that look nearly identical on the shelf can taste and feel completely different, effects-wise. The added terpenes play a major role in how the final product tastes, smells, and feels. There are 3 main sources or terpenes used when making distillate carts are:
BDT (Botanically Derived Terpenes)
Terpenes from nature, but not cannabis
These are terpenes that are extracted from non-cannabis plants (lemons, hops, oranges, etc) and added into distillate after processing. They are used primarily because they are very inexpensive and also provide some flavor consistency.
Because they are not sourced from cannabis, BDT profiles are often designed for flavor rather than strain authenticity. This can result in sweeter, more artificial or candy-like profiles that don’t always reflect the strain name on the package.
Patients may find BDT carts to be effective for THC delivery, but the overall experience may feel more simple or short-lived compared to cannabis-derived terpene options.
CDT (Cannabis-Derived Terpenes)
Terpenes from cannabis
CDT refers to terpenes that are extracted directly from cannabis plants. These terpenes are then added back into distillate to recreate a strain-specific profile.
Because they come from cannabis, CDT products tend to better reflect the natural aroma and character of the strain listed on the packaging. Many patients report that CDT carts feel more familiar and closer to the experience of flower.
CDT is often preferred by patients who want a more authentic cannabis profile while still using a distillate-based vape product.
Sauce/Sauz/HTE/HTFSE
Terpenes from fresh frozen cannabis
High Terpene (Full Spectrum) Extract, often labeled as “sauce” or “sauz” carts, refers to a distillate-based vape that has been enhanced with a higher concentration of cannabis-derived terpenes and minor compounds. This extract is commonly made with fresh frozen plant material.
These products are designed to restore more of the plant’s natural complexity compared to standard distillate, resulting in stronger aroma, richer flavor, and a more layered experience.
While still built on a refined distillate base, HTE-style carts are generally considered a step closer to full-spectrum effects compared to standard BDT or CDT blends.
Cured and Live Resin Carts
When you see “cured,” it means the plant was dried before extraction. So the oil in that cart is made from dried and cured product, basically flower that is ready to be smoked.
When you see “live,” it means the plant was frozen right after harvest. That step makes a big difference in how much of the original terpene profile is preserved. Live products carry more of the plant with them, both in flavor and in how they feel.
Instead of stripping everything out and rebuilding it like distillate, resin is made by extracting cannabinoids and terpenes from flower using hydrocarbons, with live resin using fresh frozen material to preserve more of the original profile.
For a lot of patients, these carts feel closer to flower. The terpene and cannabinoid profiles from the plant are present and the effects tend to feel more rounded, with a longer, more substantial period of relief.
Resins are extracted using butane, propane, and other potent hydrocarbons as a solvent. The products in the Florida MMTCs are tested for residual solvents and are safe, but some people still prefer to avoid solvents altogether. Those folks generally prefer Rosin carts.
Live Rosin Carts
Live rosin takes solvents out of the equation entirely.
It starts with fresh frozen flower, which is turned into bubble hash using only ice water. The hash is then pressed with heat and pressure to create hash rosin that is further processed into liquid oil that can be used in carts.
Creating great rosin is part art, part science, but when done well, creates one of the cleanest expressions of the plant that you can get. It carries cannabinoids and terpenes in a way that feels complete, and closest to the flower experience.
It is not perfect, though. Rosin carts tend to cost more and they need to be babied a bit more in terms of heat settings and length of draw. Because of that, they may not be able to deliver the same sort of immediate, heavy hitting relief some patients experience with resin and distillate products.
Still, for patients looking for a solventless, full-spectrum option, live rosin in a strain that works well for you is pretty tough to beat.
Choosing a Vape Cart
There is no single best option, just better choices, depending on what you are looking for in a vape.
If discretion, budget, and a candy-like flavor are top considerations, and you don’t need long-lasting medicine, maybe BDT distillate is the right option for your situation. If you want something a little closer to the plant, with strain specific terpenes for a longer lasting effect, CDT or sauce carts are a step up from BDT. If you want a more complex medicine, with a more complete experience, closer to the plant in flavor and effects, live resin does a good job of balancing quality and cost. There’s even a small selection of more affordable cured resin products on the market as well. And if you want the cleanest, purest, most true-to-flower option, and aren’t concerned with budget, solventless live rosin is where you will likely land.
