Smooth Scaling of Batch Sizes – How Do We Do It?

The DirectRoaster is a flexible roaster that can go from 1kg to 10kg batch size with only a few tweaks of the roast profile. This enables you, as the user, to have a sample roaster and a full production roaster in one, saving the hassle of trying to convert the profile from one machine to another. This reduces waste as well as saves time and money as less coffee needs to be used for recipe development and optimisation. It also keeps you flexible with the ever fluctuating coffee market as if a harvest is smaller than expected, you do not need a new machine to roast on.

This is achieved in multiple ways, but in the end, it mostly boils down to the supreme heat efficiency of the DirectRoaster. Thanks to this efficiency, the inside of the drum is like a bubble disconnected from the environment, which allows for the precise control of your batch. The isolated drum therefore allows the coffee to behave in an extremely predictable way when changing batch sizes. There will need to be changes made to the profile as the entire heat transfer dynamic inside the drum changes with larger batches, but this will change in the same way every time.

Coffee is an organic product that varies from harvest to harvest and even bean to bean, therefore having the best possible control over the roasting process is essential. The DirectRoaster provides this control through the efficiencies built in, such as the hefty heat insulation and the energy recovery system, ultimately making it an all around roaster that can be used from small batches to large with ease.

Posted on: 16 September 2025