IPAs, or India Pale Ales, are a popular style of beer known for their strong hop flavor and aroma. Originally brewed in England in the 19th century, they were designed to withstand long sea voyages to India. The hops used in IPAs not only add bitterness but also contribute to the beer's floral and citrus notes. There are several sub-styles of IPAs, including New England IPAs, which are hazy and juicy, and West Coast IPAs, known for their clear appearance and piney, resinous flavors. The rise in craft brewing has led to a surge in IPA popularity, making it a favorite among beer enthusiasts.