Cafes are everywhere these days, offering as many varieties of coffee as there are ways to have it served.

【翻译】如今，咖啡馆随处可见，提供的咖啡种类和用咖啡招待顾客的方式一样多。

1. Cafes are everywhere these days（主系表）, offering as many varieties of coffee as there are ways to have it served.（现在分词作伴随状语）

2. as...as...结构中，比较的 “对应项” 是： many，比较的参与方是： varieties of coffee （种类）和 ways to have it served（方式）。