---
product_id: 600367366
title: "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: "€ 15.86"
currency: EUR
in_stock: true
url: https://www.desertcart.fr/products/600367366-fermaid-o-wine-yeast-nutrient-more-natural-nitrogen-source-at
store_origin: FR
region: France
---

# Natural nitrogen boost for pure fermentation Reduces heat spikes to preserve flavor Ensures consistent, uniform fermentation 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:** € 15.86
**Availability:** ✅ In Stock

## Summary

> 🍷 Elevate your homebrew game with nature’s cleanest yeast fuel!

## Quick Answers

- **What is this?** 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?** € 15.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/600367366-fermaid-o-wine-yeast-nutrient-more-natural-nitrogen-source-at)

## 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

- • **Precision Dosing:** Optimized 2-step addition for maximum fermentation control
- • **Pure Nitrogen Power:** Harness more natural nitrogen for flawless yeast performance
- • **Multi-Brew Versatility:** Perfect for wine, beer, and mead crafting at home
- • **Crafted for Connoisseurs:** Trusted by homebrewers aiming for professional-grade results
- • **Cool & Clean Fermentation:** Minimizes heat spikes to avoid off-flavors and sulfur notes

## Overview

Fermaid O is a premium yeast nutrient designed for home winemaking, beer, and mead brewing. It provides a natural nitrogen source that promotes steady, uniform fermentations by reducing heat spikes and off-flavors. Its precise dosing method ensures optimal yeast health, resulting in enhanced fruit character and a smoother palate. Ideal for serious homebrewers seeking consistent, professional-quality results.

## Description

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

## 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.

## Images

![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)

## Available Options

This product comes in different **Flavor** options.

## 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
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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-22*