Carb-loading dish is a term used to describe a meal that is high in carbohydrates, usually eaten before an endurance event such as a marathon. The most common carb-loading dish is PASTA, which is a 5 letter word that fits the crossword solution. PASTA is a type of noodle made from durum wheat flour and water, and is often served with a sauce or other ingredients. It is a staple food in many cultures and is a popular choice for carb-loading due to its high carbohydrate content.