more subcategories this page "The Ever-Emerging Sub-Categories of India Pale Ale" the variety of the IPA category has exploded "The Ever-Emerging Sub-Categories of India Pale Ale" an article on CraftBeer.com "The Ever-Emerging Sub-Categories of India Pale Ale" "The Ever-Emerging Sub-Categories of India Pale Ale" Brewer's Association "The Ever-Emerging Sub-Categories of India Pale Ale" American IPA