The crossword solution for the term 'Muffin Starter' is RAGA, which stands for 'Raising Agent Granules and Acidity'. RAGA is a type of baking powder that is used to make muffins and other baked goods. It is made up of two components: raising agents and acidity regulators. The raising agents help the muffins to rise while the acidity regulators help to balance the pH level of the batter. This combination of ingredients helps to create a light and fluffy texture in the finished product.