Weaning is the process of gradually introducing solid foods to a baby while reducing breastmilk as the primary source of nutrition. The document provides guidelines for introducing appropriate weaning foods at different ages from 6 months to 18 months. Weaning foods should start as liquids and progress to semisolids and solids, be nutritious, easy to digest, and prepared hygienically at home. Breastfeeding should continue to be the main source of nutrition during weaning.