Hash Holes, Donut Holes and Infused Pre-Rolls Explained

October 19, 2026

Pre-rolls used to be simple: ground flower in a paper cone. Today, menus include terms like "hash hole," "donut hole" and "infused pre-roll." These products can be quite different from a standard pre-roll, so it helps to know what the terms usually mean before you try one.

One important note up front: these names are not regulated or standardized. Different makers use them in different ways, so always check the product label and lab report for specifics.

The standard pre-roll

A standard pre-roll is ground flower packed into a paper cone, usually with a filter tip. Its cannabinoid content comes from the flower alone. This is the baseline the other styles build on.

What is a hash hole?

A hash hole is a pre-roll with a column, or "rope," of concentrate running down the center, surrounded by flower. In many products, that center is a form of hash or rosin, which are concentrated forms of the plant's trichomes.

The name comes from the dark ring or "hole" you may see when you look at the end of the roll. Because the core is a concentrate, hash holes are typically much more potent than a standard flower pre-roll.

What is a donut hole?

"Donut hole" is often used to describe the same basic idea: a pre-roll with a concentrate core running through the middle of the flower. Some makers use "donut" and "hash hole" interchangeably. Others use the name for slight variations in shape, size or the type of concentrate in the center. Again, the label is your best guide.

What is an infused pre-roll?

"Infused" is a broader term. It generally means flower that has been combined with a concentrate, oil or distillate in some way. Depending on the product, that might mean:

Flower mixed with a concentrate before rolling
A pre-roll coated in oil or concentrate on the outside
A pre-roll rolled in kief, which is a powdery collection of trichomes
A concentrate core, as with a hash hole

Some infused pre-rolls may include additional cannabinoids beyond what the flower contains. The only way to know for sure is to read the product information and the lab report.

How these differ from a standard pre-roll

Potency. Adding concentrate usually raises the total cannabinoid content, sometimes by a lot.
Burn. Concentrate can make a roll burn more slowly or unevenly. A slower, careful approach is common.
Experience. Because of the higher potency, the experience may feel noticeably stronger than flower alone.
Craft. Hash holes in particular take more time and skill to make, since the core has to be centered and sealed in place.

Read the label and the COA

With products this varied, the label and the certificate of analysis (COA) are where the real information lives. When you look at a COA for a pre-roll, check:

Product name. Make sure the report matches the exact product.
Test date. Look for a reasonably recent report.
Cannabinoid table. Note the THCA, Delta-9 THC and Total THC values, plus any other cannabinoids listed.
Weight. A pre-roll's weight helps you understand how much product is in each one.

Start low and go slow

If you are new to hash holes or infused pre-rolls, or if you usually use flower only, take it easy. Try a small amount, wait to see how you feel and do not rush to have more. Effects can vary widely from person to person, and higher-potency products make that even more important.

A quick responsible-use note

Leaf Lab sells only to adults 21 and older. Hemp-derived products can cause a positive drug test. Hemp laws vary by state and keep changing, so check the rules where you live. Never drive or operate machinery after using THC products, and keep all products away from kids and pets.