As reported in The British Medical Journal a study of soft drinks, fructose consumption, and the risk of gout in men arrived at the following conclusion;

The studies Participants were made up by 46 393 men with no history of gout at baseline who provided information on intake of soft drinks and fructose through validated food frequency questionnaires.

Results During the 12 years of follow-up 755 confirmed incident cases of gout were reported. Increasing intake of sugar sweetened soft drinks was associated with an increasing risk of gout. Compared with consumption of less than one serving of sugar sweetened soft drinks a month the multivariate relative risk of gout for

5-6 servings a week was 1.29 (a 29% increase)

for one serving a day was 1.45 (a 45% increase)

and for two or more servings a day was 1.85 (a 85% increase)

Diet soft drinks were not associated with risk of gout

Other major contributors to fructose intake such as total fruit juice or fructose rich fruits (apples and oranges) were also associated with a higher risk of gout

Conclusions Prospective data suggest that consumption of sugar sweetened soft drinks and fructose is strongly associated with an increased risk of gout in men. Furthermore, fructose rich fruits and fruit juices may also increase the risk. Diet soft drinks were not associated with the risk of gout.

I believe that in the last 20 years the consumption of sugar has increased in the U.S.from 26 pounds to 135 lbs. of sugar per person per year.
Prior to the turn of this century (1887-1890), the average consumption was only 5 lbs. per person per year.
Today the average American consumes an astounding 2-3 pounds of sugar each week, which is not surprising considering the “hidden” highly refined sugars in the forms of sucrose (table sugar), dextrose (corn sugar), and high-fructose corn syrup are being processed into so many foods such as bread, breakfast cereal, mayonnaise, peanut butter, ketchup, spaghetti sauce, to name a few.

To make your gout diet work you need to look at the ingreadients in your gout recipes, those hidden ingredients that you might not be aware of that could be effecting your gout cure.