Fruit batches
The nutrients available to yeast depend on the fruit, its ripeness and the method used to prepare the must.
Support for yeast
Sugar provides energy, but not everything yeast needs.
For healthy growth, yeast also needs available nitrogen compounds, minerals and vitamins. Their concentration in a batch may be insufficient or uneven. A properly selected nutrient helps build a healthy yeast population and maintain a predictable fermentation.
What does a nutrient provide?
Supports cell multiplication at the beginning of the process.
Helps maintain yeast activity during fermentation.
Replenishes compounds that may be deficient in the raw material.
Reduces the risk of the process slowing because of nutritional deficiencies.
A nutrient cannot solve every problem. Temperatures that are too low or high, unsuitable pH, excessive sugar concentration, the wrong strain or contamination each require separate diagnosis.
When is support particularly important?
Yeast requirements depend on the raw material, intended strength, strain and fermentation method.
Mead
Honey provides abundant sugar but usually few of the assimilable compounds needed for healthy yeast growth.
High-sugar batches
A high sugar concentration places greater stress on yeast cells and requires particularly careful process management.
Restarting fermentation
Restarting a stuck process requires the right strain, an assessment of the cause and a product intended for this purpose.
Specialist fermentations
For beer, cider and distillers' washes, requirements depend on the raw material, recipe and selected strain.
Choose the right type of nutrient
| Type of support | Characteristics |
|---|---|
| Mineral nutrient | Provides simple, readily available compounds that support yeast activity. Use only at the dosage specified for the particular product. |
| Nutrient with vitamins | Combines mineral compounds with vitamins such as thiamine, which support healthy yeast metabolism. |
| Complex nutrient | Contains several groups of ingredients for broader support during fermentation. |
| Multi-stage system | Individual components are added in the order and at the times specified by the manufacturer. |
| Restart preparation | Designed to work in the difficult conditions of a stuck fermentation and should not be treated as an ordinary nutrient. |
How should a nutrient be used?
Calculate the batch volume and measure the dose specified on the label.
Check whether the product should be dissolved before addition.
Add the nutrient at the stage stated in the instructions.
Mix thoroughly using a clean, sanitised tool.
If the instructions specify staged dosing, observe the stated intervals and proportions. Do not transfer the procedure from another nutrient, even if the products appear similar.
Identify the cause before responding
A slow start, a clear drop in activity or an unusual aroma may indicate difficult conditions, but they do not automatically confirm a nutrient deficiency. Before adding another dose, check temperature, sugar content, equipment tightness, the yeast expiry date and whether the strain is suitable for the batch.
Avoid the most common mistakes
- Adding nutrient without calculating the dose for the batch volume.
- Assuming that more nutrient will make fermentation faster or better.
- Using the product at a different stage than recommended by the manufacturer.
- Combining instructions for different nutrients or pack variants.
- Treating a nutrient as the answer to every stuck fermentation.
A simple selection path
Raw material → yeast requirements → nutrient type → dosage → correct timing
A suitable nutrient should match the batch and selected strain. The correct dose and method of addition stated on the label are essential. If you are unsure which variant to choose, tell us the raw material, volume and intended result.