--- product_id: 66916132 title: "Fermaid O | 120 g" brand: "cellarscience" price: "€ 39.24" currency: EUR in_stock: true reviews_count: 11 category: "Cellar Science" url: https://www.desertcart.it/products/66916132-fermaid-o-120-g store_origin: IT region: Italy --- # 100% organic nitrogen enhances aroma & flavor reduces heat spikes Fermaid O | 120 g **Brand:** cellarscience **Price:** € 39.24 **Availability:** βœ… In Stock ## Summary > 🌿 Elevate your fermentation game with organic precision and flawless flavor! ## Quick Answers - **What is this?** Fermaid O | 120 g by cellarscience - **How much does it cost?** € 39.24 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/66916132-fermaid-o-120-g) ## Best For - cellarscience enthusiasts ## Why This Product - Trusted cellarscience brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Flavor Amplifier:** Boosts aroma and flavor expression with a perfectly balanced nutrient supply. - β€’ **Cool & Controlled:** Minimizes excessive heat generation during yeast growth to protect your batch. - β€’ **Pure Organic Power:** Delivers 100% organic nitrogen from inactivated yeast for steady, reliable fermentations. - β€’ **Certified Clean & Green:** Non-GMO and certified organicβ€”ideal for natural, low-input winemaking. - β€’ **Outperforms Conventional:** Avoids nitrogen spikes common in DAP nutrients, excelling in low YAN or high-sugar musts. ## Overview Fermaid O is a 120g certified organic yeast nutrient powder that supplies 100% organic nitrogen from inactivated yeast. It ensures consistent, healthy fermentations by reducing heat spikes and off-aromas, enhancing flavor and aroma profiles. Perfect for natural winemaking and meadmaking, it outperforms traditional DAP nutrients by providing balanced nutrition without nitrogen spikes. ## Description Contains organic sources of nitrogen, not damp, along with nutrients for a healthy fermentation with less heat spikes. Better yeast health equals better flavors. Use 1.5G per gallon. Rehydrate in distilled water and add at 1/3 sugar depletion. Review: Fermaid O great for fermentation - Since starting to use a couple grams in each fermentation has been more consistent and less worry about stalling. Every batch gets this now. Review: Fermaid O is HUGE for Meadmaking - Fermaid O is supremely helpful if you brew stuff that isn't nutrient rich for yeast; I brew meads without much else in the recipe so the rather hostile atmosphere can cause a more stressed out yeast. Fermaid O improves the quality of my brew, and the value of that for the money is enough that I won't go without it. Pros: -The standard for organic yeast nutrition -Preferred over inorganic yeast nutrition -I feel it improves the taste and smell of what I ferment Cons: -People get riled up over using it or not Happy yeast make happy ferments; I keep my yeast happy by using Fermaid O. ## Features - Provides 100% organic nitrogen from inactivated yeast for steady, reliable fermentations - Reduces risk of off-aromas and excessive heat generation during yeast growth - Enhances aroma and flavor expression through balanced nutrient supply - Certified organic and non-GMO; ideal for low-input and natural winemaking - Outperforms traditional DAP-based nutrients in low YAN or high-sugar musts by avoiding nitrogen spikes ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B074D9HQJD | | Best Sellers Rank | #274,168 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #803 in Beer Brewing Ingredients | | Brand | CellarScience | | Brand Name | CellarScience | | Coin Variety 1 | Yeast | | Customer Reviews | 4.8 out of 5 stars 347 Reviews | | Global Trade Identification Number | 00843200100138 | | Item Form | Powder | | Item Package Quantity | 1 | | Item Package Weight | 0.13 kg | | Item Weight | 4 ounces | | Manufacturer | CellarScience | | Model Number | AD332B | | Number of Items | 1 | | Number of Pieces | 1 | | Part Number | AD332B | | Size | 4.2 Ounce (Pack of 1) | | Specialty | Certified Organic | | UPC | 843200100138 | | Unit Count | 4.2 Ounce | ## Product Details - **Brand:** CellarScience - **Item Form:** Powder - **Item Weight:** 0.25 Pounds - **Number of Items:** 1 - **Unit Count:** 4.2 Ounce ## Images ![Fermaid O | 120 g - Image 1](https://m.media-amazon.com/images/I/514eBYMLRhL.jpg) ## Questions & Answers **Q: Is there an expiration date? Is it good for more than 2018? And does it require refrigeration, or just cool dark? Thx** A: Generally, we would recommend using the product within 12 months after opening. Refrigeration would be best, but is not required for storage. **Q: What is the difference between A & B?** A: AD332A has 12 grams of product while AD332B has 120 grams. **Q: Do you add an additional 1.5 grams at 1/3 depletion? Or are you splitting the 1.5 grams? Also do you add it immediately?** A: There are two schools of thought on this: 1. add at 24 hrs/48 hrs/72 hrs. Less specific than: 2. add at yeast pitch/25% depletion/33.3% depletion. YMMV **Q: Fermaid o is manufactured by lallemand, but this listing shows the manufacturer as "cellularscience". who is cellularscience? is this genuine?** A: I believe that Lallemand's smallest package size is 2.5kg. Cellularscience repackages the several products into smaller retail size packages. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fermaid O great for fermentation *by C***D on December 28, 2023* Since starting to use a couple grams in each fermentation has been more consistent and less worry about stalling. Every batch gets this now. ### ⭐⭐⭐⭐⭐ Fermaid O is HUGE for Meadmaking *by C***E on December 27, 2025* Fermaid O is supremely helpful if you brew stuff that isn't nutrient rich for yeast; I brew meads without much else in the recipe so the rather hostile atmosphere can cause a more stressed out yeast. Fermaid O improves the quality of my brew, and the value of that for the money is enough that I won't go without it. Pros: -The standard for organic yeast nutrition -Preferred over inorganic yeast nutrition -I feel it improves the taste and smell of what I ferment Cons: -People get riled up over using it or not Happy yeast make happy ferments; I keep my yeast happy by using Fermaid O. ### ⭐⭐⭐⭐⭐ Essential nutrients for a balanced mead *by N***. on October 27, 2020* Mead is a finicky fermenting drink. Honey and water is notoriously lacking in nutrients that are essential for yeast, including nitrogen and phosphate. As a results, yeast can become stress and output unpleasant flavors and fusel alcohols, which taste like you'd imagine jet fuel to taste like. Fermaid O seeks to remedy this by providing the proper nutrients for happy yeast. A few tips... 1) I add a few grams at yeast pitch into the must. This allows the yeast enough nutrition to get started. 2) For even fermenting and happy yeast, common recommendations are to have a "staggered" nutrient addition schedule. I like to add complementary nutrients -- diammonium phosphate (DAP) and Fermaid K -- at the 24, 48, and 72 hour mark. This, when paired with Fermaid O, allows for steady fermentation and a reduced likelihood of bad or "off" flavors. 3) Fermaid O is a little different than Fermaid K. It is an organic source of nutrients, rather than chemical. Overall, I think Fermaid O is necessary for making top-tier meads. I would recommend it for intermediate mead makers. ## Frequently Bought Together - CellarScience - AD332B Fermaid O (120 g), 4.2 Ounce (Pack of 1) - Fermtech - Auto Siphon Mini with 6 Ft of Food Safe Tubing & Clamp - Easy Home Brewing, Winemaking Kit, Complete System for Beer, Wine, Liquid Transfer & Fermentation Tools - Perfect for Small Batches - Five Star - 6022b_ - Star San - 32 Ounce - High Foaming Sanitizer --- ## 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.it/products/66916132-fermaid-o-120-g](https://www.desertcart.it/products/66916132-fermaid-o-120-g) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-07-27*