Canadian Red Vines
Brewer’s Gold hop cones. (Photo courtesy Great Lakes Hops)

A forgotten hop variety is working its way back into the brewing world for two simple reasons: In research trials it has produced 4-5 times as much hops by weight as other varieties, and it grows well in areas outside the ideal 35-55-degree latitude lines.

Canadian Red Vine can be traced back to some of the earliest hop yards in North America, including the first hop yard in the state of New York, which began in Madison County in the early 1800s. The variety, which is believed to be of North American origin, according to researchers familiar with the plant, is known for its vigor and high yields: the exact reason why the hop-hungry brewing industry is looking its way.

Kelly Gaskill, a research assistant at North Carolina State University’s North Carolina Hops Project in Mills River, which was established in 2010, said that Canadian Red Vine bines yield 4-5 times as much fresh hops by weight as other varieties she has worked with, which include Nugget and Chinook.

Gaskill and her research team have focused on targeting and emphasizing the plant’s vigor and high yields through breeding efforts. North Carolina is located at the lower cusp of the 35-55-degree latitude range ideal to hop growing, so the team’s results could be a promising revenue stream for local farmers who live in areas that have a difficult time with growing the bines.

The plant does come with challenges, however. It has high levels of cohumulone, an alpha acid known to contribute a harsh bitterness to beer with flavors that have been described as cheesy, oniony and garlicky.

Another issue with Canadian Red Vine: The bine tends to grow outward as much as it does upward, a trait not all hop growers care for in crop management, and it is susceptible to mildew.

“Canadian Red Vine is a very vigorous hop. It’s not on the top half of the plant; it’s on the bottom,” says Lynn Kemme, the head grower and owner of Great Lakes Hops in Zealand, Michigan. “We’re trying to breed out the tendency to throw so many rhizomes out of it.”

“We’ve sent it as far north as Alaska, and it survived,” says Kemme, who provided the Canadian Red Vine rhizomes to Gaskill and her team. “It is one of the most cold-tolerant hop varieties I have worked with and put through hop trials in Michigan.”

Canadian Red Vines Rhizomes
Canadian Red Vine rhizomes. (Photo courtesy Bob Bero)

Bob Bero, a former agronomy major who worked in turf management and had a hobby of homebrewing and hop growing, was given Canadian Red Vine in the late 1980s by Norm Soine, a Syracuse-based microbrewer with the Syracuse Suds Factory who also kept a hop garden. Soine knew that the plants he gave Bero, other than a rhizome of British Gold, had come from New York’s first hop yard, but neither was aware that Canadian Red Vine was in the bunch.

In the early 1990s, Bero took samples of his plants to Al Haunold at Oregon State University, a professor who worked in hop breeding for the university and the U.S. Department of Agriculture, and Haunold told him: “We haven’t seen those in a long time.”

Haunold did an oil analysis of the plant and confirmed: It was Canadian Red Vine.

“About a year later my buddy Dave called me up and said my name was on the USDA hop variety homepage,” says Bero, who now owns B-Hoppy, a company that makes hop candy. “That was my five minutes of fame.”

Though the hop has still yet to become prominent in brewing, Gaskill’s team gave 14 pounds of its fresh Canadian Red Vine hops to Sierra Nevada Brewing Co. in Fletcher, North Carolina, which is just across the French Broad River from the research hop yard. The brewery made 20 barrels of a blond ale that used Bravo hops for initial bittering, then incorporated Canadian Red Vine hops toward the end to accentuate their flavor.  

“As far as onion or garlic, we didn’t get anything,” says Sierra Nevada brewer Tyler Downey. “But again, the rates were so low it’d be hard to give an opinion on it without more trials. Ours was fairly clean, but again it was such a small volume.”

The brewery, Downey says, is big on the potential of the crop because it could go “to supporting the whole community, not just the brewery… all the farmers and the people in between that get the ingredients from the farm to the glass in a local and sustainable cycle.”

Sierra Nevada is looking forward to working more with the variety.

“I think for the next crop it’s going to be more testing,” says Downey. “If we can get enough, it’ll probably be a single-hop pale ale just so we can figure out what we’re working with and where we want to take it from there.”