Continuous processing allows to maximize space-time yields and is implemented in many industrial branches. However, in manufacturing of value added compounds produced with microbial hosts, continuous processing is not state-of-the-art yet. This is because fluctuating productivity causes unwanted process deviations. Cascaded continuous bioprocessing, unlike conventional continuous process modes, was found to result in stable productivity. This manuscript serves as a guideline how to set up a cascaded continuous cultivation with Escherichia coli BL21 DE(3).