作为咖啡的爱好者，我深知在众多的咖啡选择中，胶囊咖啡一直是一个备受争议的话题。有些人认为，只有手冲出的一杯咖啡才是真正的咖啡体验，但我不同意这种观点。手冲确实能够让我们感受到制作过程中的乐趣和历史文化的沉淀，但它也有其弊端，对于那些追求方便与快速的人来说，它显然不够。

那么，什么是胶囊咖啡呢？它其实就是厂商预先将咖啡粉装入一个塑料胶囊内，然后充入氮气以保鲜。当我们需要喝时，只需将这个胶囊放入专用的机器，就能迅速享受到一杯香浓的咖啡。

关于gelatinous coffee capsules and their differences, some netizens shared their insights. "The main advantage of gelatinous coffee is that it's very easy to use and doesn't require any skills or knowledge," said one user. "You just put the capsule in the machine and press a button, and you'll have your coffee in no time."

Another user pointed out that gelatinous coffee machines are not as expensive as espresso machines, but they can still produce high-quality coffee. "I've tried both kinds of machines," the user said, "and I can tell you that gelatinous coffee is just as good if not better than espresso."

Regarding the question of whether gelatinous coffee is pure or not, one netizen explained that it depends on the brand and type of capsule used. "Some brands may add additional ingredients to their capsules," the user said, "so it's always best to check the packaging for any allergen warnings or other information."

As for how long gelatinous capsules can be stored before they lose their flavor or aroma, another netizen suggested that it varies depending on factors such as storage conditions and expiration date.

In terms of taste differences between Americano-style gelatinous coffees versus Grande/Lungo styles, one netizen noted: "The main difference lies in extraction time - Americanos take around 18-30 seconds while Lungos take about a minute longer with more liquid extracted."