Barley Malt
Process Barley Malt
The process of converting barley into malt involves three stages including
1. Steeping
2. Germination
3. Kilning
Steeping
Steeping is the first and most important stage in the manufacturing of
malt. In this stage barley is soaked in water to stimulate the conditions
that start germination or growth. The process takes place in a steep tank
that is usually aerated to encourage fast moisture uptake by the barley.
Germination
After steeping, the process of germination starts in which hormones and a
group of enzymes are produced. Germination usually takes place in a vessel
where is blown through the growing malt to control its temperature and
moisture content. The changes during germination are called "modification"
which is a vital role in the whole process.
Kilning
The final stage is known as kilning in which water is extracted from the
malt. The combination of high grain moisture and high temperatures would
normally destroy the enzymes developed during germination. It can also be
slightly roasted for colour and flavour. The malt kilning process is
manipulated so that the malt is dried at a relatively low temperature using
high flows of air. Then when the malt is dried with moisture content of
around 10%, the kilning temperature is increased so that the malt developes
colour and flavour. At the completion of kilning, the malts' moisture
content will be 4-5%.
