Riwaka Hops

AromaAlpha 4.5 - 6.5%New Zealand

Riwaka is a legendary aroma hop that stands as the crown jewel of the New Zealand hop industry. Released in 1997 by the Plant & Food Research program, it was originally designated "B Saaz" due to its direct lineage from the classic Czech Saaz landrace. This variety is a true "brewer’s hop," prized for its exceptionally high total oil content that delivers an aromatic intensity far beyond its modest alpha acid percentage. Because it is famously temperamental in the field and requires specific climatic conditions to thrive, its annual harvest is one of the most anticipated events in the craft beer world. Riwaka remains the definitive choice for those seeking a high-impact, "New World" character that retains a sophisticated, noble-derived structural elegance.

The sensory profile of Riwaka is a concentrated explosion of pungent citrus and tropical fruit. It is world-renowned for its signature "pink grapefruit" character, which leads a primary bouquet of passionfruit, sweet kumquat, and a distinct "dank" or "diesel" edge common in high-myrcene New Zealand varieties. As the profile develops, brewers will find subtle secondary notes of green tea and a soft, peppery spiciness that pays homage to its Saaz heritage. Thanks to its massive myrcene content and unique oil composition, Riwaka delivers a lush, saturated aromatic presence and a clean, refreshing finish, making it an essential component for modern, fruit-forward beer styles.

Substitution Tip

If you can't find Riwaka, the best alternatives are Citra®, Motueka, Nelson Sauvin, or Saaz.

At A Glance

ProfileCitrus, Tropical Fruit, Pink Grapefruit, Passionfruit, Sweet Kumquat, Dank, Green Tea, Pepper, Spicy
PurposeAroma
Alpha Acid4.5 - 6.5%
SubstitutesCitra®, Motueka, Nelson Sauvin, Saaz
Pairs withCitra® (for a massive/international citrus blend), Motueka (to add a lime-citrus top-note), Nelson Sauvin (for a full New Zealand tropical experience)
Beer StylesNew Zealand Pilsner, Hazy India Pale Ale, West Coast India Pale Ale, Pale Ale

General Information

Country
New Zealand
Aliases
D Saaz, 85.6-23
Storage Stability
Retains 50 - 60% alpha acid

Brewing Chemistry (Acids & Oils)

Alpha Acid
4.5 - 6.5%
Beta Acid
4.0 - 5.0%
Cohumulone
29.0 - 38.0%
Total Oil
1.5 - 2.0 ml/100g
Myrcene
65.0 - 75.0%
Humulene
8.0 - 12.0%
Caryophyllene
2.0 - 5.0%
Farnesene
< 1.0%
Linalool
0.6 - 0.9%
Geraniol
~0.2%

Growth & Cultivation

Yield
1,200 - 1,500 lbs/acre
Maturity
Mid-season
Growth Rate
Moderate to high
Cones
Medium-sized, relatively loose, and heavily saturated with bright yellow, pungent lupulin
Ease of Harvest
Moderate; due to its lower yields and specific maturation window, timing the harvest is critical to
Sex
Female
Leaf Color
Medium green
Side Arm Length
15" - 25"

Discovery Tags

Usage

Last Updated
  • 2026-04-08 00:01:19