The process of soaking herbs, tea, or other ingredients in hot water to extract flavor; also, an introduction or addition of something new into something else.
From Latin 'infusio' (a pouring in); 'in-' (into) + 'fundere' (to pour), literally meaning to pour into something to extract or introduce qualities.
Herbal infusions are how humans have extracted medicine and flavor for thousands of years—it's simple chemistry where hot water breaks down cell walls and dissolves compounds, which is why tea has been called 'liquid history.'
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