This chapter focuses on food plants, aromas, tastes, and flavors of food plants. It will also cover the importance of staple crops such as corn, wheat, rice, legumes, and oil seeds, together with their nutritional value and global significance as staple food crops as well as yield development. Food plants are integral to human nutrition, offering a diverse array of aromas, tastes, and flavors derived from their unique chemical compositions, including carbohydrates, proteins, essential oils, and secondary metabolites. Staple crop species such as corn, wheat, and rice form the foundation of global diets, providing essential carbohydrates, proteins, and micronutrients. These crops account for the most caloric intake worldwide and serve as critical resources for global food security. Legumes, including beans, lentils, and peas, complement these staples with high-quality protein and essential amino acids while enriching soils through nitrogen fixation. Oil seeds, such as soybeans, sunflowers, and rapeseed, contribute essential fatty acids and energy, supporting both dietary needs and industrial uses.