Using the correlations of VAR forecast errors at different horizons, this paper analyses the dynamics of co-movements between crude oil and food prices. For each food price considered, the VAR model is estimated on two subsample periods: a pre-commodity boom (1990M1-2006M12) and a post-boom period (2007M1-2015M12). Results show strong positive co-movements between the crude oil and food prices in the aftermath of the commodity boom, while no statistically significant co-movements are observed over the pre-boom period. Our findings then provide an additional empirical evidence on the actual linkages between the crude oil and agricultural markets.