Plant foods are closely connected to cultural, social and economic aspects of human societies, both past and present. Food-preparation techniques and the etiquette of consumption involve complex interactions of natural resources and human cultures. During European prehistory, these changes included the shift to sedentism, the cultivation and domestication of plants, food storage, the production and exchange of alcoholic beverages and luxury foodstuffs, and the continuous adaptation of established culinary practices to newcomers in fields and gardens.