Fig. 6: Regional cuisine analysis of spice usage and indication coverage.
From: From phytochemicals to recipes: health indications and culinary uses of herbs and spices
a PCA bi-plot obtained from the frequency of spice usage in different cuisines, representing regions as scores and spices as loadings. PC1 and PC2 account for 37.86% and 24.79% of the total variance, respectively. b Heatmap showing the authenticity of spices in Indian cuisines. The darker regions indicate more frequent use of certain spice pairs. c A cluster map was obtained by calculating the cosine similarities between the PCs of different regions. Cuisines that are closer together in the dendrogram have more similar spice usage profiles. d Cluster heatmap showing the indication coverage for the different regional cuisines of India.
