In this article, Infusion will be addressed from various perspectives, with the aim of delving into its importance, incidence and relevance today. Along these lines, different aspects related to Infusion will be analyzed, focusing on its evolution over time, its impact on society and its influence in different areas. Likewise, relevant data, studies and reflections will be presented that will allow the reader to obtain a comprehensive and enriching vision about Infusion. From its origins to its current situation, through its implications in the cultural, social, political or economic sphere, this article aims to shed light on Infusion and generate a space for reflection and debate around this very transcendental topic.
Process of extracting chemical compounds or flavors from plant material in a solvent
Infusion is the process of extracting chemical compounds or flavors from plant material in a solvent such as water, oil or alcohol, by allowing the material to remain suspended in the solvent over time (a process often called steeping). An infusion is also the name for the resultant liquid. The process of infusion is distinct from both decoction—a method of extraction involving boiling the plant material—and percolation, in which water is passed through the material (as in a coffeemaker).
Tea is far older than this, dating back to the 10th century BC as the earliest recorded reference.
Preparation techniques
Infusion is a chemical process that uses botanicals (typically dried herbs, flowers or berries) that are volatile and release their active ingredients readily in water, oil, or alcohol. In this process, a liquid is typically boiled (or brought to another appropriate temperature) and poured over the herb. After the herb has been allowed to steep in the liquid for an appropriate period of time, it is removed (possibly by straining) leaving an infusion. Unless the infusion is to be consumed immediately, it is bottled and refrigerated for future use.
The amount of time the herbs are left in the liquid depends on the kind of infusion. Infusion times can range from seconds (for some kinds of Chinese tea) to hours, days, or months (for liqueurs like sloe gin).
There are several accessories and techniques for removing the steeped or leftover botanicals that were used to infuse liquids, including metal steepers (which look like clamps), tea infusers (which act as strainers), and french presses (which are commonly used to infuse water with various teas and coffee). The most commonly used technique is the teabag, which is made with filter paper and filled with various tea flavors.
Examples
Left side: Lime, ginger and mint infused waterRight side: Pomegranate infused waterMate
Tea is a common example of an infusion; most varieties of tea call for steeping the leaves in hot water, although some variants (e.g. Moroccan mint tea) call for decoction instead. Many herbal teas are prepared by infusion, as well; lemon, chamomile, senna, apple, ginger, rooibos, and many other plants are used individually or in combination.
Herbal remedies are commonly produced through infusions in water or oil.
Flavored oils: Plants with desirable flavors may be steeped in an edible oil or vinegar for an extended period; the infused oil or vinegar is often sold still containing the plant and is then used as flavoring. Chilis, lemon, garlic, and many other plants may be used. There can be ambiguity in the labeling of these oils: for example, what is described as sesame oil may be oil extracted from sesameseeds or another vegetable oil infused with sesame.
Cucumber water, a mix of sliced cucumber with citrus slices and herbs such as mint, is a popular infusion. It is sometimes known as "spa water" due to it being commonly served in day spas and similar personal care establishments.[citation needed]