Northern Nigeria faces significant challenges in post-harvest food losses due to inadequate infrastructure for waste management and processing. The study employed a mixed-methods approach combining qualitative interviews with quantitative analysis of project data. Pilot projects showed an average reduction in post-harvest losses of 30% through improved processing techniques. Zero waste food processing is economically viable and can significantly reduce agricultural waste, providing a model for sustainable development. Government incentives should be provided to encourage the establishment of more zero waste plants, particularly in rural areas. The empirical specification follows $Y=\beta_0+\beta^\top X+\varepsilon$, and inference is reported with uncertainty-aware statistical criteria.