Here are some important resources on diet for lowering uric acid, a key strategy to prevent gout flares (click on links to access the resource):

The DASH Diet
What is the DASH Diet?  
What was the DASH trial?

The DASH Diet & Uric Acid or Gout
Does the DASH diet lower uric acid?
Is the DASH diet associated with lower risk of gout?
Does the DASH diet lower uric acid in people with elevated uric acid levels (hyperuricemia)?

Vitamin C & Uric Acid or Gout
Does vitamin C lower uric acid?
Does vitamin C lower risk of gout?
Does vitamin C prevent gout flares?

Dairy Products & Gout
Do dairy products prevent gout?

Carbohydrates & Uric Acid
Do amount or quality of carbohydrates affect uric acid levels?

Dietary Items Related to Gout
What food items are associated with gout among men in the United States?
What food items are associated with gout among adults in the United States?

Rheumatology Recommendations for Diet & Gout
Mayo Clinic: Gout Diet
Arthritis Foundation: 5 Good Foods for Gout 
Gout & Uric Acid Education Society: The Gout Diet
Arthritis Australia: Diet and Gout