Key Traits of Thora

Thora is a highly aromatic hop cultivar defined by exceptionally high thiol levels—among the highest of any U.S.-produced variety—with tropical fruit aroma descriptors including passion fruit, orange, guava, and stone fruit. Primarily intended for use in hop-forward and hazy IPA styles. This profile summarizes key sensory, brewing, and agronomic traits used by growers and brewers when evaluating Thora.

Aroma and Flavor

Thora contributes a distinctive aroma profile that can shape beer character and flavor expression.

• Primary Aromas: passion fruit, orange, guava, stone fruit

Brewing Uses

Thora is used in a range of brewing styles based on its chemistry and sensory profile.

• Styles: IPA, Hazy IPA

Yield and Growth

• Yield: 1052.8-1859.85 kg/ha
• Maturity: Early to mid-season

Disease Resistance

• Downy Mildew: Resistant (avg score 1.07 on 1-5 scale; statistically better than nursery average of 1.33)
• Powdery Mildew: Resistant (no cases observed in on-station trials)

Alpha and Beta Acids

• Alpha Acids: 8.16-9.24 %
• Beta Acids: 2.78-3.48 %

Research and Publications

• Notice of the Release of 'USDA-ARS Thora' by USDA Agricultural Research Service (USDA-ARS Official Release Notice) , 2025