In the summer, tomatoes rule the kitchen, even if few know how to prepare them with any differentiation.
The result is a great deal of imitation, combined with small efforts at differentiation and innovation.
differentiation dif·fer·en·ti·a·tion (dĭf'ə-rěn'shē-ā'shən)
The acquisition or possession of a character or function different from that of the original type. Also called specialization.