A chocolate truffle is a type of chocolate confectionery, traditionally made with a chocolate ganache centre coated in chocolate, icing sugar, cocoa powder or chopped toasted nuts (typically hazelnuts, almonds or coconut), usually in a spherical, conical, or curved shape.
Other fillings may replace the ganache: cream, melted chocolate, caramel, nuts, almonds, berries, or other assorted sweet fruits, nougat, fudge, or toffee, mint, chocolate chips, marshmallow, and, popularly, liqueur.
Their name derives from the usual shape they take as the word ‘truffle’ derives from the Latin word tuber, meaning “swelling” or “lump”, which later became tufer.
Source: Wikipedia
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