710 Labs is a name that’s been a major player in the California concentrates game for almost a decade. After starting in Colorado and expanding into California, Florida, and Michigan, they’re just about to launch their first batch of hash in New Jersey and have sights set on Washington, D.C., for their next expansion. Still, with the size of their operation and the amount of flavorful hash they put out, many people working there still keep a stocked fridge of work from some of the most well-known hashmakers out there. So when the higher-ups agreed to the fans’ desire to see a 710 Labs thumbprint, people in the lab and garden were salivating at the thought.
For context, a thumbprint, also known as an eggdrop, is a style where a ring of cold cure encapsulates a little lake of rosin jam. While cold-cured rosin has more of a batter or dough-like texture, jam is a slurry-like mix of terpene syrup and THCA crystals. The two, when put together, often resemble the little jam-centered cookies. It’s a style that’s been made popular by The Real Cannabis Chris who first started releasing them in 2019 and nowadays has been popping up in the rec. markets of Colorado and Maine. A thumbprint offers a chance to try out two different flavors of hash without a divider in the jar, choosing to mix and match them into your own preferred ratio.
Right now 710 Labs makes one drop of these thumbprints per month, garden permitting, and they only yield between 50 to 150 jars per run, making them one of the brand’s most exclusive releases. This most recent thumbprint offered another unique aspect: the ability to try a strain as both cold cure and jam. To cap off this special one-on-one, 710 Labs chose to use their incredible Z cut, a favorite of their founder Brad Melshenker, to create a double dose of that crowd-pleasing cultivar.
The results are delicious. The jam offered light, airy, candied Z goodness, while the cold cure delivered a richer, creamier texture on the palate and more depth of flavor. Together, the pairing brought the best of both worlds, making for a scrumptious, phenomenally balanced dab.
Jeff Wirt, who’s been with the company for eight years and helped set up the labs in California and Michigan, told us he thinks this Z has the classic astringency up front but also gives off some layers as well. He described it as an effervescent Z that presents strongly without that nosebleed monoterp for a much more layered experience. After trying some for ourselves, we can definitely say that he knows his stuff.
This article was originally published in the April 2025 issue of California Leaf.
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