They focus on seasonal products, and as well as teaching you how to cook them, they also show you how to choose them.

他们主要是针对季节性的食物，还会教你如何烹饪，当然了他们也会告诉你如何进行挑选。

Ice, unsurprisingly, is a seasonal product, and the laborious task of building up enough stock to survive the summer begins months ahead of time.

没错，冰块属于季节性产品，而建立足够的库存以迎合夏季的大量需求需要提前几个月开始准备。