The book "Pseudocereals and Less Common Cereals" by John R.N. Taylor provides a comprehensive analysis of the current challenges and risks associated with the dominance of only three cereal types in the global food supply. At a time when the reliance on wheat, rice, and corn accounts for about 75% of total cereal production, the author highlights the potential dangers arising from this food oligoculture. The reduction of genetic diversity and the associated risks of crop failures due to pests or diseases are discussed in detail. Additionally, the role of intensive agriculture and the related environmental issues are addressed, particularly in developing countries where the necessary resources are often unavailable. The book is aimed at professionals and interested readers who wish to gain a deeper understanding of the significance of pseudocereals and less common cereals in global food security.