Irish Ale Yeast | Omega Yeast OYL-005
Omega OYL-005 Irish Ale Yeast for Malt-Forward Irish and British Styles
Omega Yeast OYL-005 Irish Ale is a versatile ale strain for brewers who want a balanced fermentation profile that supports malt character, keeps esters restrained, and finishes clean enough for classic Irish and British-inspired beers. It is a strong choice for stout, porter, Irish red ale, and other recipes where the grist should stay central.
Based on Omega's published guidance and current retailer technical references, this strain typically delivers 69% to 75% attenuation, medium flocculation, up to 10% ABV tolerance, and a recommended fermentation range of 62 to 72°F. It is especially useful when you want firm fermentation performance without burying roasted or malty flavor under excessive fruitiness.
What Omega OYL-005 Contributes to Beer
- Malt-forward fermentation profile: Supports roasted, caramel, and toasty malt character in classic ale styles
- Moderate esters: Adds just enough fruit to keep the beer lively without pushing the profile out of style
- Clean finish: Helps beers stay balanced and drinkable
- Good versatility: Useful across Irish and British-inspired recipes that need steady, reliable performance
Omega OYL-005 Specifications
- Attenuation: 69% to 75%
- Flocculation: Medium
- Alcohol tolerance: up to 10% ABV
- Fermentation temperature: 62 to 72°F (16 to 22°C)
Best Styles for OYL-005 Irish Ale
- Irish Stout
- Dry Stout
- Porter
- Irish Red Ale
- Other malt-forward ales
Why Brewers Choose OYL-005
This strain is a practical fit when a beer needs to showcase grain character, drink smoothly, and stay stylistically grounded. It helps stout and porter recipes hold onto their malt structure while still fermenting out with the balance and drinkability brewers expect from classic pub styles.
For brewers who want a dependable ale yeast that complements malt more than it competes with it, OYL-005 is a strong option.
Liquid Yeast Storage and Shipping
We store liquid yeast in temperature-monitored refrigeration to help preserve yeast health until shipment. Once in transit, weather and carrier handling are outside our control, so liquid yeast customers should choose shipping protection based on season, route, and transit time.
Expedited shipping, insulated mailers, and ice packs can materially reduce risk for liquid yeast during warm-weather transit. Dry yeast is generally much less risky to ship than liquid yeast.
Related Yeast and Brewing Resources
Browse our full Omega Yeast collection for more ale, stout, and specialty strains. You can also review our yeast shipping best practices page before ordering liquid yeast in warmer weather.
If you want an Irish ale strain that keeps malt character in focus and finishes with classic balance, Omega OYL-005 is a strong choice.