Complementary feeding is the transition from milk feeding to family foods. These foods are necessary to cover the age-appropriate nutritional needs since this transition happens during period of rapid growth and development when infants are susceptible to nutrient deficiencies and excesses. Gastrointestinal and renal functions as well as the relevant developmental skills have to be sufficiently mature during this important stage. Complementary foods (ie, solid foods and liquids other than breast milk or infant formula) should be introduced during the second half of the first year of life and never before the age of 4 months. Healthy term infants should be offered foods with a variety of flavours and textures, including bitter tasting green vegetables. Continued breast-feeding is recommended alongside CF. Allergenic foods may be introduced while breastfeeding. Whole cows’ milk should not be used as the main drink before 12 months of age. Added sugar and salt should be avoided. All infants should receive iron-rich complementary foods including meat products and/or iron-fortified foods. It is suggested that feeding with commercially available infant food starts after the 6th month and generally restricted in cases that healthy home prepared food is not available.