How a teabag works and what it separates?

A teabag works by allowing hot water to permeate its porous material, which facilitates the extraction of flavors, colors, and compounds from the tea leaves inside. As the water infuses with the tea, it separates soluble substances like tannins, polyphenols, and essential oils, creating the brewed beverage. The teabag itself acts as a filter, keeping the loose leaves contained while permitting the desired elements to pass through into the liquid. This process results in a convenient and mess-free way to brew tea.