Based on the available information, the best grain for uric acid would be rice. Rice is considered gout-friendly as it is low in purines, which are broken down into uric acid in the body. Purine-rich grains like oats should be avoided, but rice is a safe option for individuals with gout. Other grains such as pasta, bread, and cereals can also be consumed without exacerbating gout symptoms, as they are generally low in purines. It is important to note that while these grains may not directly affect gout symptoms, individuals with gout should still consume them in moderation as part of a balanced diet. Consulting with a healthcare professional or a registered dietitian is recommended for personalized advice on managing uric acid levels and gout symptoms.