---
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: "2358 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Craft A Brew"
url: https://www.desertcart.is/products/600367366-craft-a-brew-fermaid-o-wine-yeast-nutrient-more-natural
store_origin: IS
region: Iceland
---

# 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:** 2358 kr
**Availability:** ✅ In Stock

## Summary

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

## 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?** 2358 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/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

- • **Trusted Craftsmanship:** From Craft A Brew, blending sustainability with premium quality ingredients.
- • **Pure Natural Nitrogen Power:** Supports healthier yeast metabolism with no synthetic DAP or ammonia salts.
- • **Versatile Brewing Essential:** Perfect for wine, beer, and mead crafting at home.
- • **Cooler, Cleaner Fermentation:** Minimizes heat spikes to prevent off-flavors and sulfur compounds.
- • **Precision Dosing for Perfect Results:** Recommended 1.5g/gal in two stages for flawless fermentation control.

## Overview

Fermaid O is a premium 1oz yeast nutrient designed for home winemaking, beer, and mead brewing. It provides a natural nitrogen source that promotes steady, consistent fermentations by reducing heat spikes and off-flavors. Easy to dose and trusted by craft brewers, it ensures a smoother, fruitier finish without synthetic additives.

## Description

desertcart.com: 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 : Grocery & Gourmet Food

Review: Wine - Worked great for my project. Nutrients kept yeast fed.
Review: Worked well great product - Worked like a charm.

## 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 | #21,541 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #365 in Food Coloring |
| Brand | Craft A Brew |
| Brand Name | Craft A Brew |
| Cuisine | Wine, Mead, Beer |
| Customer Reviews | 4.7 out of 5 stars 199 Reviews |
| Flavor | Fermaid O - 1oz |
| 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 - 1oz
- **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)

## 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.

### ⭐⭐⭐⭐⭐ Worked well great product
*by E***D on December 2, 2025*

Worked like a charm.

### ⭐⭐⭐⭐⭐ Created a grate wine
*by K***N on February 26, 2026*

Grate product just finished first batch of wine and it turned out wonderful

## 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 Iceland*
*Store origin: IS*
*Last updated: 2026-03-05*