One of the causes of gout is eating a diet high in purines if you are unable to process those purines. They become uric acid which then accumulates in the small joints of the body (usually).
Here is a list of foods with purine levels.
Below is a list of high, medium, low purine foods. Purines in your diet will cause/exacerbate gout.
High-purine foods: Anchovies, Roe (fish eggs), Fish such as herring, mackerel and sardines, Scallops and mussels, Game meats, like goose, duck, and partridge, Organ meats: brains, heart, kidney, liver, and sweetbreads, Meat extracts, Mincemeat, Broth, bouillon, and consomme, Gravy, Yeast (baker's and brewer's) taken in the form of a supplement.
Medium-purine foods: Fish and shellfish not on the high purine list above, Poultry foods not on the high purine list above, Beef, lamb, pork, and other red meats not on the high purine list above, Dried beans, peas, lentils, Asparagus, Mushrooms, Spinach, Cauliflower, Green peas, Oats and oatmeal, Wheat germ and bran, Whole grain breads and cereals.
They should be avoided especially during an attack.
Food that are high in antioxidants such as blackberries, cherries, alfalfa, celery, and citrus are sometimes considered to be good choices for helping with gout.