Complex sentence: Chile and Peru both claim the Pisco Sour as their national drink, and each asserts exclusive ownership of both pisco and the cocktail; consequently, the Pisco Sour has become a significant and oft-debated topic of Latin American popular culture.
Split into simpler sentences: Chile and Peru both claim the Pisco Sour as their national drink, and each asserts exclusive ownership of both pisco and the cocktail. Thus, the Pisco Sour has become a significant and oft-debated topic of Latin American popular culture.