A Tripel and a Quadrupel are both Belgian-style beers, but they have different characteristics. Tripels are typically lighter in color, ranging from golden to light amber, and have a more delicate, fruity, and spicy flavor profile. They usually have an alcohol content of around 8-10%. On the other hand, Quadrupels are darker in color, with deep red and ruby brown hues, and have a richer, more complex taste, with malt richness, dark fruit flavors, and spicy elements. The alcohol content is generally higher in Quadrupels, ranging from 10-12%.