Epsilon-N-1-(1-Deoxylactulosyl)-L-lysine is a specific chemical compound formed when lactose reacts with lysine, a type of amino acid, under certain conditions. It is an Amadori product, meaning it's formed through a Maillard reaction where a reducing sugar (like lactose) reacts with a primary amine (lysine). This reaction can occur during food processing or under physiological conditions.