ALES -052 -DIPA Ale Homebrew Pitch - A strong fermenter popularly referred to as “Conan.” Its peach, apricot and pineapple notes are steroids for hops, complementing modern fruity hop profiles in particular. A diacetyl rest is suggested if fermented in the lower temperature range.

ALES - 021 - Hefeweizen Ale I -Homebrew Pitch - A classic German wheat strain, it’s a cloudy, big top cropper. Presenting banana and clove, the esters turn up with increased temps, wort density and decreased pitch rate, or stay muted at lower temps where clove stands out. Over-pitching can lessen the banana. Sulfur conditions out

ALES - 044 - Kolsch II Homebrew Pitch - This Kolsch strain is warmer fermenting than Kolsch I (OYL-017), flocculates much better and clears more quickly, so it is a little easier to manage. It is a lager-like ale strain that’s lightly fruity, crisp and clean with a hint of sulfur that disappears with age to leave a clean ale. Accentuates hop flavors.

ALES - 200 - Tropical IPA Hombrew Pitch - Tropical IPA is a unique Saccharomyces strain formerly classified as a Brettanomyces strain, that produces delicate, tart, tropical mango and pineapple fruit characteristics with a clean finish. Try it at its higher temperatures to bring out the tropical profile. It’s stubbornly non-flocculent, but worth it. This strain tests positive for the STA1 gene, an indicator of Saccharomyces cerevisiae var. diastaticus, and is capable of fermenting dextrins, resulting in very high attenuation.

ALES - 004 West Coast Ale I -Popularly called “Chico,” West Coast Ale I is a reliable, versatile and popular neutral foundation for displays of malts and hops. Often used as a house strain, it is highly attenuative and moderately flocculent. And it ferments crisp and clean with light citrus notes under 66° F (19° C).

BELGIAN ALES - 024 - Belgian Ale A Homebrew Pitch - As one of the few highly flocculent Belgian ale strains, Belgian Ale A is thought to originate from a Wallonian brewery whose reputation dwarfs the small village in which it is located. It makes a great Belgian house strain. It is brewery friendly, crops easily and has a well-rounded flavor profile with balanced fruitiness and phenolics. Esters increase with upward temperatures.

BELGIAN ALES - 028 - Belgian Ale W Homebrew Pitch - An eruptive top cropper displaying nice fruit and rustic phenolics, the reliable Belgian Ale W is thought to be from a famous tripel brewer. A good flocculator with a wide temperature range. Three famous brewers ferment this on vastly different schedules, showing the versatile outcomes available.

BELGIAN ALES - 042 - Belgian Saison II Homebrew Pitch - Thought to originate from a small, sophisticated, Belgian brewer’s spelt saison, Belgian Saison II is earthy, spicy, peppery, tart and dry, with tropical fruit and citrus at warm fermentation temperatures. It is a perfect strain for farmhouse ales and saisons. It favors pitching in the upper 60s or low 70s and being allowed free-rise from there. This strain tests positive for the STA1 gene, an indicator of Saccharomyces cerevisiae var. diastaticus. This strain may have the ability to metabolize dextrins over time, resulting in higher than expected attenuation.

BELGIAN ALES - 026 - French Saison Homebrew Pitch - This citrusy, lightly phenolic saison strain is so attenuative and reliable in performance that people joke it could ferment a shoe. The French Saison strain results in great body consistency. It is good for any of the characteristically aromatic Belgian styles and is highly compatible with hops and spice aromas. Attenuation is 80-90% or more. This strain tests positive for the STA1 gene, an indicator of Saccharomyces cerevsiae var. diastaticus, and is capable of fermenting dextrins, resulting in very high attenuation.

BELGIAN ALES - 030 - Wit Homebrew Pitch - Enthusiastically top cropping, this essential Wit yeast is distinctive for the popular, refreshing, easy-drinking summer style. Spicy phenols carry the flavoring, while at the same time being supported—but not overshadowed—by good ester character. Lightly tart and dry.

NORWEGIAN ALES - 057 -HotHead Kveik Homebrew Pitch -A highly flocculent Norwegian kveik ale strain with an astoundingly wide temperature range and little change in flavor across the range, Hothead™ is clean enough for both American and English styles. It has a unique honey-like aroma with overripe mango which is complementary to modern, fruity hops. Temperature control is unnecessary with this strain. Non-phenolic and no fusels, even at higher temperatures.

NORWEGIAN ALES - 061 -Voss Kveik Homebrew Pitch - A traditional Norwegian kveik directly from the Gjernes farmstead, Voss Kveik’s orange-citrus notes present throughout its wide temperature range. So, like the mango-honey profile of HotHead® Ale (OYL-057), Voss Kveik’s orange-citrus is relatively clean across its fermentation temperature range and pairs well with citrusy, fruity hops. Fermentation speed takes off at higher temperatures. Non-phenolic.

NORWEGIAN ALES - 091- Hornindal Kviek Homebrew Pitch - A wonderfully unique Norwegian farmstead "kveik," Horindal produces a tropical flavor and complex aroma that can present itself as stonefruit, pineapple, and dried fruit leather, which complement fruit-forward hops. Add even more dimension to "C" hops and increase ester intensity with a high fermentation temperture. Ferments well at 90 degrees F. Non-phenolic and no fusels, even at higher temperature.

HYBRIDS - 501 - Gulo Ale Homebrew Pitch - Gulo Ale is the latest creation to emerge from the curious minds of our R&D team. The progeny of Irish Ale (OYL-005) and French Saison (OYL-026), this true genetic hybrid is a beast at devouring sugars, which creates a very dry beer without any of the peppery, clove phenolics associated with saisons and Belgian ales. Expect a citrus-forward aroma with hints of peach and a clean finish. Gulo Ale excels in any style where a high level of attenuation is desired without phenolics. We love using it in an IPA (including a brut IPA), stout, or Bière de Garde. Non-phenolic. Patent Pending.

HYBRIDS - 500 -Saisonstein's Monster Homebrew Pitch - Saisonstein's Monster is an Omega-original, genetic hybrid of two Saison strains, the French (OYL-026) and Belgian (OYL-027). It is versatile, aromatic and attenuative with a silky mouthfeel. It excels in high gravity and it ferments more reliably and thoroughly than its parents. It is spicy, complex, tart, dry and crisp with some bubblegum character present from its Belgian parent, and more fruit and fewer phenolics than its French parent. Attenuation is 80-90% or more.

BRITISH ALES - 006 - British Ale I Homebrew Pitch - A productive, brewer-friendly top cropper attributed to a historic London brewery whose lab once hosted Louis Pasteur, British Ale I drops fast and clear, and is clean and crisp at low temperatures with heightened esters and a lightly tart, dry finish at the upper range.

BRITISH ALES - 011 - British Ale V Homebrew Pitch - A good top cropper thought to be from a famous Manchester bitter maker, British V’s lingering haze and residual sweetness pairs popularly with the signature look and huge, fruity hop profile of the New England IPAs (NEIPA). Alternately, try DIPA (OYL-052) for slightly less residual sweetness.

BRITISH ALES - 016 - British Ale VIII Homebrew Pitch - A ridiculously thorough flocculator thought to be from a highly regarded English ESB, British Ale VIII has unique fruitiness and noticeable finishing sweetness. It drops out quickly and completely. It is easy to crop, but needs a diacetyl rest. To enhance the fruit, ferment at the recommended temperature ceiling.

BRITISH ALES - 005 - Irish Ale Homebrew Pitch - Ireland’s storied stout is thought to be balanced by this dry, crisp, lightly fruity, versatile and powerful strain. The Irish Ale strain is a good fermenter with reliable, average flocculation and a hint of fruit at the lowest recommended temperatures, which increases in complexity at higher temperatures (64° F/18° C and higher). Some diacetyl possible. Successful in dark and high gravity beers. Sláinte!

BRITISH ALES - 015 - Scottish Ale Homebrew Pitch - Thought to originate from the famous Scottish brewer, the Scottish Ale strain is a flocculent, versatile, reliable house strain that produces neutral to complex and malty profiles in its fairly wide temperature range. Hop character is not muted by this strain. Bring out more esters in higher fermentation temperatures. It flocculates better than West Coast Ale I (OYL-004).

ESPE KVEIK - 090 - Originating from the village of Grodås in Norway, the Espe kveik blend offers the unique profile of lychee, pear, and tropical fruit cup. It bolsters the sweet aromatics of modern IPAs, but is versatile enough for your flagship pale ale or seasonal brew. Most expressive when fermented at 90°F+ (32°C+), Espe still reveals character at its lower temperature range.

LUTRA KVEIK - 071 - Isolated from our Hornindal Kveik (OYL-091) culture, Lutra® is shockingly clean with unrivaled speed when pitched at 90°F (32°C). The strain is perfect for brewing an even more neutral and refreshing pseudo-lager at its lower temperatures, without the lead time of a traditional lager yeast. Lutra is your worry-free way to navigate the evolving demand for cold ones.

DRIED LUTRA KVEIK - 071DRY - The same shockingly clean Lutra® that you love in liquid form is now available in a convenient dry format. Dried Lutra’s clean canvas, huge temperature range, high alcohol tolerance, and fast finishing speeds means unrivaled flexibility and versatility for nearly any style. For a refreshing pseudo-lager or a huge imperial stout — for any reason you’re using a neutral dry yeast, use Dried Lutra and get more, faster. Lutra’s success in dry form is related to the remarkable history of kveik.

COSMIC PUNCH ALE - 402 -A Thiolized™ version of our popular hazy strain, British Ale V (OYL-011), Cosmic Punch™ Ale generates thiols through biotransformation, releasing tropical aromas experienced in southern hemisphere hops and New Zealand Sauvignon Blanc. This punchy strain unleashes vibrant grapefruit, passion fruit and guava notes. Expect the same performance and haze you get from British V, but with additional thiol aromas. Experiment with mash hopping or wine grape-derived products to push even more thiols.

LITHUANIAN ALES - 033 - Jovaru Lithuanian Farmhouse Homebrew Pitch - Borne from an exclusive partnership with the famed Jovaru® Brewery’s “queen of Lithuanian farmhouse beer,” this unique yeast complements farmhouse beers with citrusy esters and restrained phenols. The strain produces a character of lemon pith, black pepper, and a soft mouthfeel. I sveikata! This strain tests positive for the STA1 gene, an indicator of Saccharomyces cerevisiae var. diastaticus. This strain may have the ability to metabolize dextrins over time, resulting in higher than expected attenuation. JOVARU® is an ALDONA UDRIENĖ® yeast strain that originates from the famous JOVARU® Brewery that has been in operation since the mid-19th century.

SUNDEW ALE - 401 - Sundew’s® ripe strawberry, passion fruit, pear, and stone fruit combine to emphasize desirable notes in modern fruity hops. This Omega Yeast original strain was inspired by its parental strain’s fruit esters, which were originally obscured by Belgian phenolic character. Sundew, however, is non-phenolic and incapable of producing the spicy clove flavors that were previously competing with its pure, juicy red-fruit bouquet.

LAGERS -111 - German Bock Homebrew Pitch - Thought to be from the famous Alpine brewery in Aying, Bavaria, the German Bock strain is a versatile, malty-charactered lager strain that balances malt and hop flavors well. It is superb for bocks, doppelbocks, Oktoberfest lagers, helles and a favorite for American pilsners, too.

LAGERS - 107 - Oktoberfest Homebrew Pitch - This strain is a slow fermenter but said to be worth the wait by fans of Märzenbier and Oktoberfest Lagers particularly. The Oktoberfest strain facilitates a smooth, rich, balanced beer with full, malty profile. Make sure to give it a thorough diacetyl rest.

LAGERS - 106 - German Lager I Homebrew Pitch - Versatile, crisp, malty profile, light esters and a wide fermentation range, German Lager I is thought to be the world’s most used lager strain and can produce a convincing lager at ale temperatures. Fermenting in the low temperature range (45-55° F), it maintains a more crisp profile. Temperatures higher in range (65-68° F) bring out slightly heightened esters. Rest for diacetyl.

LAGERS - 114 - Bayern Lager Homebrew Pitch -Thought to come from Munich’s oldest, traditional and vintage-vibed brewery. The Bayern Lager strain is clean, crisp and ferments well at a wide range. It has good flocculation, and has both low sulfur and low diacetyl production.

LAGERS - 113 - Mexican Lager Homebrew Pitch - This great lager strain is thought to originate from a well known Mexican brewery. Simply put, the Mexican Lager strain is clean, crisp, bright and versatile.

LAGERS - 101 - Pilsner I Homebrew Pitch - Thought to be the H strain of the famous Plzen brewer, Pilsner I lager has a dry and neutral taste profile and is gently malty with a lightly perceptible floral aroma and is the first of the famous Czech strains inspiring America’s most famous light, brilliantly clear, golden lagers. Commonly produces sulfur during fermentation that clears during lagering. Watch out for diacetyl.

BRETTS AND BLENDS - 201 - Brettanomyces Claussenii Homebrew Pitch - The mildest on the Brettanomyces funkiness spectrum, Brettanomyces claussenii presents more of a leathery earthiness and some pineapple—both characteristics that are contributed in large part by the aroma alone. It does its best work as a secondary yeast.

BRETTS AND BLENDS - 212 - Bring On Da Funk Homebrew Pitch - Brett Blend #3: Bring on Da Funk consists of two Saccharomyces strains from Brett Blend #1 (OYL-210) spiked with both Brettanomyces bruxellensis and Brettanomyces lambicus, plus two additional Brettanomyces isolates from a Brett-famous Colorado brewery, plus two Brett isolates from an “intense” Belgian source to equal a funky, fruity, complex 8-strain composition. The Brett character will develop over time, as will acid production if exposed to oxygen.

BRETTS AND BLENDS = 210 - Brett Blend #1 Where Da Funk? Homebrew Pitch - One Brett-famous Colorado brewery strain, plus two strains that were formerly classified as Brett (but are now known to be Saccharomyces), result in huge tropical fruit aromas that mingle well with fruity aroma hops. Note that aroma intensity fades a bit during conditioning. Brett Blend #1: Where Da Funk? has a wide temperature range, finishes very dry, and leaves neither much funk nor much body (consider adding flaked oats for body). Mild funk level and low acidity is consistent even with extended aging

BRETTS AND BLENDS - 217 C2C American Farmhouse Homebrew Pitch - C2C American Farmhouse is a coast to coast blend of one saison strain from a famous Northeast U.S. brewery and one Brettanomyces strain from a Northwest U.S. brewery. The blend results in a fast developing fruity and funky farmhouse ale. This strain tests positive for the STA1 gene, an indicator that this strain may have the ability to metabolize dextrins over time, resulting in higher than expected attenuation.

BACTERIAL CULTURES - 605 - Lactobacillus Blend Homebrew Pitch - A Lactobacillus brevis and plantarum blend that is clean and reliable with a wide temperature range. The plantarum, isolated in collaboration with Marz Community Brewing, sours efficiently at lower temperatures. Maximum souring develops typically within 48 hours with no need to hold high temperatures as it is efficient at the lower end of its range. Note also that the blend is extremely hop sensitive, so make sure to add only to unhopped wort.

BRETTS AND BLENDS - 218 - All the Bretts Homebrew Pitch - A blend of nearly every Brett in our collection. Use All the Bretts in secondary and expect high attenuation and a fruity and funky complexity that continues to develop over time. This evolving blend always contains at least 10 Brett strains.

BRETTS AND BLENDS - 211 - Brett Blend #2 Bit O' Funk Homebrew Pitch - Brett Blend #2: Bit O’ Funk contains the two Saccharomyces strains from Brett Blend #1 (OYL-210) for primary fermentation and is spiked with Brettanomyces bruxellensis for development of classic, funkforward Brett character during secondary fermentation. The bit ‘o funkiness will take extended time to develop (3 months or more)