---
product_id: 64418873
title: "Fermaid O, 12g"
brand: "cellarscience"
price: "HK$142"
currency: HKD
in_stock: true
reviews_count: 5
category: "Cellar Science"
url: https://www.desertcart.hk/products/64418873-fermaid-o-12g
store_origin: HK
region: Hong Kong
---

# 100% Organic Nitrogen source Optimized for wine & mead fermentation Lower fermentation heat output Fermaid O, 12g

**Brand:** cellarscience
**Price:** HK$142
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your ferment game with organic precision—because your craft deserves the purest boost!

## Quick Answers

- **What is this?** Fermaid O, 12g by cellarscience
- **How much does it cost?** HK$142 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/64418873-fermaid-o-12g)

## 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

- • **Pure Organic Power:** Fermaid O replaces inorganic DAP with an all-organic nitrogen source for cleaner, smoother ferments.
- • **Flavor-Forward Ferments:** Reduced negative sulfur compounds ensure your wine and mead taste refined and balanced.
- • **Universal Nutrient Boost:** Perfect for all fermentation types—wine, mead, and beyond—at just 1.5g per gallon.
- • **Cooler Fermentation Process:** Lower heat output protects delicate aromas and flavors, elevating your craft batch.
- • **Consistent Fermentation Flow:** Easier yeast digestion means fewer fermentation spikes and healthier yeast performance every time.

## Overview

Fermaid O is an advanced organic yeast nutrient designed to replace traditional DAP in wine and mead fermentation. By providing organic nitrogen, it promotes smoother, more consistent fermentations with lower heat and fewer off-flavors, enhancing yeast health and final product quality. Ideal for professional and home fermenters seeking a cleaner, flavor-focused fermentation experience.

## Description

Fermaid O is a newer formulation of the same Fermaid K that winemakers everywhere have learned to trust their ferments to. The main difference in composition between the two, is that the Fermaid O has replaced the inorganic DAP with an organic source. In terms of how this benefits the winemaker, there are several points! Features: Organic Nitrogen is easier for your yeast to digest, resulting in a smoother, more consistent fermentation. Fewer fermentation spikes means better yeast health, and the ability to ferment to its full capacity. Compared to DAP, Fermaid O will result in lower heat output from the yeast, and lower levels of negative sulfur compounds. This is a nutrient which will boost the quality of wine, regardless of process. Lower heat production, less negative flavor compounds, better overall fermentation kinetics and flavors! To Use: Use at a rate of 1.5g / gal of must/juice.

Review: but excellent substitute for DAP (Di Ammonium Phospgate) - Pricey, but excellent substitute for DAP (Di Ammonium Phospgate). Small amount needed for mead fermentation well worth the price. Works well in divided nutrient additions for mead fermentation, completely substituting, as advertised, in place of DAP.
Review: Five Stars - Great

## Features

- Same as Fermaid K, but ORGANIC
- No need to add additional DAP
- Use for any type of fermentation
- Recommended for use in wine and mead
- 12 grams

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B00OSIM8WS |
| Best Sellers Rank | #283,198 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #862 in Beer Brewing Ingredients |
| Customer Reviews | 4.0 4.0 out of 5 stars (22) |
| Is Discontinued By Manufacturer  | No |
| Item model number  | FMT_FO_12G |
| Manufacturer  | Lallemand |

## Images

![Fermaid O, 12g - Image 1](https://m.media-amazon.com/images/I/21xUM62MUlL.jpg)

## Questions & Answers

**Q: What package is it shipped in? does it have any advertising or is it a standard usps box?**
A: The order will arrive in a white poly bubble padded mailing envelope.  There will be a shipping label with the sellers company's name and return address.

**Q: How much is recommended to add per gallon?**
A: While I've seen some places recommend 1.5 grams per gallon, it can vary based on yeast strain, what you are making (beer, wine, mead), etc.

## Customer Reviews

### ⭐⭐⭐⭐⭐ but excellent substitute for DAP (Di Ammonium Phospgate)
*by O***C on November 8, 2015*

Pricey, but excellent substitute for DAP (Di Ammonium Phospgate). Small amount needed for mead fermentation well worth the price. Works well in divided nutrient additions for mead fermentation, completely substituting, as advertised, in place of DAP.

### ⭐⭐⭐⭐⭐ Five Stars
*by A***E on September 12, 2015*

Great

### ⭐⭐ to expensive for this "my bad" should have looked a ...
*by T***R on October 30, 2017*

to expensive for this "my bad" should have looked a little harder I found 10 times the amount for 1/2 the price !!

## Frequently Bought Together

- Fermaid O, 12g
- Lalvin ICV-D47 Wine Yeast, 5g - 10-Pack
- Five Star - Star San - 16 Ounce - Brew Sanitizer High Foaming Acid Anionic

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-03*