--- product_id: 600367366 title: "Craft A Brew - Fermaid O - Wine Yeast Nutrient - More Natural Nitrogen Source - At Home Winemaking - Promotes Consistent Wine Fermentations - Used in Beer & Mead Brewing - 1oz" brand: "craft a brew" price: "AR$31245" currency: ARS in_stock: true reviews_count: 8 category: "Craft A Brew" url: https://www.desertcart.com.ar/products/600367366-craft-a-brew-fermaid-o-wine-yeast-nutrient-more-natural store_origin: AR region: Argentina --- # Natural nitrogen boost Reduces heat spikes Consistent fermentation Craft A Brew - Fermaid O - Wine Yeast Nutrient - More Natural Nitrogen Source - At Home Winemaking - Promotes Consistent Wine Fermentations - Used in Beer & Mead Brewing - 1oz **Brand:** craft a brew **Price:** AR$31245 **Availability:** βœ… In Stock ## Summary > 🍷 Elevate your homebrew game with Fermaid O β€” where science meets sublime flavor! ## Quick Answers - **What is this?** Craft A Brew - Fermaid O - Wine Yeast Nutrient - More Natural Nitrogen Source - At Home Winemaking - Promotes Consistent Wine Fermentations - Used in Beer & Mead Brewing - 1oz by craft a brew - **How much does it cost?** AR$31245 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/600367366-craft-a-brew-fermaid-o-wine-yeast-nutrient-more-natural) ## Best For - craft a brew enthusiasts ## Why This Product - Trusted craft a brew brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Pure Natural Nitrogen Power:** Supports yeast with a clean, DAP-free nutrient source for smoother fermentations. - β€’ **Versatile Brewing Essential:** Perfectly suited for wine, beer, and mead, making your homebrew stand out. - β€’ **Craft A Brew Quality Promise:** Trusted ingredient from Orlando’s top homebrew supplier, blending sustainability with excellence. - β€’ **Cool & Controlled Fermentation:** Minimizes heat spikes to prevent off-flavors and preserve vibrant fruit notes. - β€’ **Precision Dosing for Perfect Results:** Recommended 1.5g/gal in two stages ensures steady, reliable fermentation every time. ## Overview Craft A Brew Fermaid O is a premium yeast nutrient designed for home winemaking, beer, and mead brewing. It provides a natural nitrogen source free from harsh additives like DAP, promoting steady, controlled fermentations that enhance fruit character and reduce off-flavors. Ideal for professional and passionate homebrewers seeking consistent, high-quality results with every batch. ## Description BEST SELLING KITS We’re on a mission to turn craft beer lovers into craft beer brewers with our premium homebrew kits. Designed to help first-timers and hobbyists alike make the best possible beer in their very own kitchens, right out of the box. Since 2010, we’ve been perfecting our easy-to-use kits, sourcing the freshest ingredients from the same suppliers of the American craft beer industry and proudly assembling each kit by hand, under one roof in Orlando, FL. BEST SELLING ACCESSORIES How did we get our start? Selling our kits at farmers markets in 2010. We assemble each kit by hand and use the highest quality ingredients sourced from the same suppliers in the industry. Why do we love what we do? We nitrogen-flush our hops & grains to ensure the freshest, most flavorful ingredients.. Plus, we use a hybrid extract + grain brewing process that produces craft brewery quality beer. What makes our products unique? Our goal is to turn craft beer lovers into brewers with our kits. We create an experience that is fun, easy & educational from brew day to opening that first bottle. How did we get our start? Selling our kits at farmers markets in 2010. We assemble each kit by hand and use the highest quality ingredients sourced from the same suppliers in the industry. Why do we love what we do? We nitrogen-flush our hops & grains to ensure the freshest, most flavorful ingredients.. Plus, we use a hybrid extract + grain brewing process that produces craft brewery quality beer. What makes our products unique? Our goal is to turn craft beer lovers into brewers with our kits. We create an experience that is fun, easy & educational from brew day to opening that first bottle. Review: Wine - Worked great for my project. Nutrients kept yeast fed. Review: Cyser brewing - I brew cysers and this is perfect. ## Features - FOR WINE, BEER & MEAD-MAKING - Fermaid O is a highly efficient yeast nutrient and rich source of more natural nitrogen. It’s used to achieve steady wine fermentations by compensating for deficiencies in nitrogen and micronutrients in the must (unfermented wine). It can also be a vital component in the brewing process for beer and mead. - HOW IT WORKS - Fermaid O aids yeast in producing less heat during fermentation compared to nutrients containing DAP. This minimizes heat spikes, resulting in fewer negative sulfur compounds and off-flavors in the wine. Additionally, it enhances ripe fruit character while reducing dryness sensation on the palate. - EFFICIENT YEAST NUTRIENT - Fermaid O is an updated version of Fermaid K, notable for its absence of more natural nitrogen such as Diammonium phosphate (DAP) or ammonia salts. The more natural nitrogen it provides makes it easier for wine yeast to digest, resulting in a more uniform fermentation process. - SUGGESTED USAGE - Recommended dosage is 1.5 grams per gallon of wine. Best if added in 2 doses: half at the end of the lag phase, and the other half once the sugar content is depleted by 1 ⁄ 3 of original gravity, calculated with a hydrometer. Before adding the second dose to an active fermentation, mix with room temperature water to avoid excess CO2 release and overflow. - CRAFT A BREW QUALITY - Based in Orlando, FL, our mission at Craft a Brew is to stand as the trusted source for homebrew supplies. Guided by our core values of delivering top-notch ingredients, combining elegance with efficiency in design, and championing environmental sustainability, we ensure that every sip is a delightful experience, savored just the way it should be. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CHN7XNPT | | Age Range Description | Adult | | Best Sellers Rank | #28,451 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #502 in Food Coloring | | Brand | Craft A Brew | | Brand Name | Craft A Brew | | Cuisine | Wine, Mead, Beer | | Customer Reviews | 4.6 out of 5 stars 104 Reviews | | Flavor | Fermaid O | | Item Weight | 1 Ounces | | Manufacturer | Craft A Brew | | Number of Items | 1 | | Size | 1 ounce | | UPC | 850051633364 | | Unit Count | 1 Count | ## Product Details - **Brand:** Craft A Brew - **Cuisine:** Wine, Mead, Beer - **Flavor:** Fermaid O - **Item Weight:** 1 Ounces - **Number of Items:** 1 ## Images ![Craft A Brew - Fermaid O - Wine Yeast Nutrient - More Natural Nitrogen Source - At Home Winemaking - Promotes Consistent Wine Fermentations - Used in Beer & Mead Brewing - 1oz - Image 1](https://m.media-amazon.com/images/I/719zE4QjlaL.jpg) ![Craft A Brew - Fermaid O - Wine Yeast Nutrient - More Natural Nitrogen Source - At Home Winemaking - Promotes Consistent Wine Fermentations - Used in Beer & Mead Brewing - 1oz - Image 2](https://m.media-amazon.com/images/I/81KnzsuUrlL.jpg) ![Craft A Brew - Fermaid O - Wine Yeast Nutrient - More Natural Nitrogen Source - At Home Winemaking - Promotes Consistent Wine Fermentations - Used in Beer & Mead Brewing - 1oz - Image 3](https://m.media-amazon.com/images/I/81JkoRzWO7L.jpg) ![Craft A Brew - Fermaid O - Wine Yeast Nutrient - More Natural Nitrogen Source - At Home Winemaking - Promotes Consistent Wine Fermentations - Used in Beer & Mead Brewing - 1oz - Image 4](https://m.media-amazon.com/images/I/810gp1-o2-L.jpg) ![Craft A Brew - Fermaid O - Wine Yeast Nutrient - More Natural Nitrogen Source - At Home Winemaking - Promotes Consistent Wine Fermentations - Used in Beer & Mead Brewing - 1oz - Image 5](https://m.media-amazon.com/images/I/71WW0s0fhGL.jpg) ## Available Options This product comes in different **Flavor** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Wine *by T***Y on December 6, 2025* Worked great for my project. Nutrients kept yeast fed. ### ⭐⭐⭐⭐⭐ Cyser brewing *by D***H on December 3, 2025* I brew cysers and this is perfect. ### ⭐⭐⭐⭐⭐ A little pricey, but works well *by G***B on May 18, 2024* I use this for meads primarily and it definitely helps keep fermentation going smoothly. I’ll likely look for a better deal elsewhere though. ## Frequently Bought Together - Craft A Brew - Fermaid O - Wine Yeast Nutrient - More Natural Nitrogen Source - At Home Winemaking - Promotes Consistent Wine Fermentations - Used in Beer & Mead Brewing - 1oz - Lalvin EC-1118 Wine Yeast (10 Pack) - Champagne Yeast - Make Wine Cider Mead Kombucha At Home - 5 g Sachets - Saccharomyces cerevisiae - Sold by CAPYBARA Distributors Inc. - Lalvin D47 Wine Yeast (10 Pack) - Make Wine Cider Mead Kombucha At Home - 5 g Sachets - Saccharomyces cerevisiae - Sold by CAPYBARA Distributors Inc. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/600367366-craft-a-brew-fermaid-o-wine-yeast-nutrient-more-natural](https://www.desertcart.com.ar/products/600367366-craft-a-brew-fermaid-o-wine-yeast-nutrient-more-natural) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-05-18*