Originally Posted by Brewbecca
I'm also going to malt some barley I just grew, harvested about 60 kg, this is the first time so I'm taking it slowly!
So I was wandering, has anyone discovered what dimension is a plump? I read somewhere malting plants want barley at least 2.2 mm diameter, can help? Do you use a filter to select grains of a same size before malting?
Stefano, that is correct. I work for the Canadian Grain Commission and I described the plump and thins a few post before you asked this. It is done by a maltsters request, something like no more than 4% thins, no more than 2% forign material, no more than 5% peeled and broken. Each maltster will have their own specifications to what they want. In Canada, this is pre selected on the farm before it is delivered to the shipper. That way anything that is entering the system is known to be malt quality before it ties up space. Also, it is possible to be selected, and because of poor storage, when it is time for delivery, another sample is taken and it can then be turned down,
As for sizing, it is actually a very simple procedure. The grain is passed over a set of sieves, and anything too small will fall through and the bigger plump seeds will stay on top.
As I write this I am looking at a boat headed to China, 10 000 tonnes of Copeland and 34 000 tonnes of Metcalf. These samples will be then taken home and used in my home malting.