It all started with a breakthrough discovery at Wageningen University. For the first time it became clear that valuable biochemicals, in the form of medium chain fatty acids, could be produced out of organic waste streams. This could be big step forward compared to composting or digestion of organic waste to biogas. The last 10 years ChainCraft worked on this disruptive biobased innovation, scaling up from laboratory to pilot scale and then on to an operational and semi-commercial demonstration scale. As with most start-up ventures it has been a challenging and bumpy road. Now at scale-up phase, with a technically and economically viable concept, ChainCraft is ready to grow towards a competitive challenger in the chemical industry.