Yeast Nutrient – Diammonium Phosphate (DAP) is one of the most widely used yeast nutrients in home brewing and fermentation. Providing a readily assimilable source of nitrogen, DAP helps support healthy yeast metabolism, vigorous fermentation, and cleaner finished beverages across a wide range of fermentation applications.

Many fermentable sugar sources used in cider, mead, wine, and hard seltzer production are naturally deficient in the nutrients required for healthy yeast growth. Without adequate nutrition, yeast can become stressed during fermentation, leading to sluggish fermentations, incomplete attenuation, and the production of undesirable compounds such as hydrogen sulfide.

Yeast Nutrient – Diammonium Phosphate (DAP) supplies yeast with an easily absorbed form of nitrogen, one of the most important nutrients required during fermentation. By improving yeast health and vitality, DAP promotes stronger fermentation activity, improved sugar conversion, and more reliable fermentation outcomes.

DAP is particularly valuable when fermenting beverages made primarily from sugar, honey, fruit juice, or low-nutrient fermentables. These fermentations often lack the naturally occurring amino acids and nutrients found in malt-based brewing, making supplementation essential for optimal results.

Whether you’re producing cider, mead, wine, hard seltzer, or other fermented beverages, Yeast Nutrient – Diammonium Phosphate (DAP) helps create a healthier fermentation environment and supports cleaner, more consistent results.

Key Features

• Pure Diammonium Phosphate (DAP)
• Provides a readily assimilable nitrogen source
• Supports healthy yeast growth and metabolism
• Improves fermentation performance
• Helps reduce yeast stress
• Assists in preventing sluggish fermentations
• Helps reduce hydrogen sulfide production
• Suitable for cider, mead, wine, and hard seltzer
• Easy to dose and use
• Suitable for home and commercial fermentation

Benefits for Fermentation

Supports Healthy Yeast Growth

• Provides essential nitrogen
• Improves yeast vitality
• Encourages strong fermentation activity

Improves Fermentation Performance

• Promotes complete fermentation
• Supports consistent attenuation
• Reduces fermentation problems

Helps Prevent Off-Flavours

• Reduces the risk of hydrogen sulfide formation
• Minimises yeast stress
• Supports cleaner flavour profiles

Ideal Applications

Cider Making

• Apple Cider
• Pear Cider 
• Fruit Ciders

Mead Making

• Traditional Mead
• Melomels
• Fruit Meads
• Session Meads

Winemaking

• Red Wine
• White Wine
• Fruit Wine

Hard Seltzer Production

• Sugar-Based Seltzers
• Flavoured Hard Seltzers

Brewing Applications

• High Gravity Brewing
• Sugar Adjunct Fermentations
• Specialty Fermentations

Usage Instructions

Recommended Dosage:

• Use 1 gram per 5 litres of must or fermentation volume

This dosage helps support healthy yeast growth and may assist in reducing the risk of hydrogen sulfide production during fermentation.

Approximate Measurement

• 1 teaspoon ≈ 3.1 grams

Important: For accurate dosing, we strongly recommend using a digital scale rather than relying on volume measurements.

Why Use DAP?

Many fermentation substrates contain insufficient levels of Yeast Assimilable Nitrogen (YAN). DAP helps bridge this nutritional gap by supplying one of the key nutrients yeast require for healthy reproduction and fermentation performance.

The result is:

• Faster fermentation starts
• Improved fermentation reliability
• Reduced risk of stuck fermentations
• Cleaner finished products

Product Information

Product Type:
Yeast Nutrient

Active Ingredient:
Diammonium Phosphate (DAP)

Suitable For:
Beer, Cider, Mead, Wine, Hard Seltzer, and Other Fermented Beverages

Recommended Usage:
1g per 5L