Is porridge a solution or mixture?

A solution is a homogeneous mixture of two or more substances. A mixture is a combination of two or more substances that are not chemically bonded. In a solution, the solute (the substance being dissolved) is evenly distributed throughout the solvent (the substance doing the dissolving). In porridge, the oats and water are not chemically bonded, and the oats are not evenly distributed throughout the water. Therefore, porridge is a mixture.