Encapsulation technology is the set of methods for enriching foods by encapsulating extra nutrients — and flavours, colours, and cultures — inside protective microscopic vehicles. Spray-drying traps oils and flavours in starch or gum matrices; coacervation wraps droplets in protein-polysaccharide skins; liposomes and solid-lipid nanoparticles carry sensitive actives through processing and digestion. The goals are consistent: shield fragile ingredients from heat, oxygen, and acidity; mask unpleasant tastes; control release — in the mouth, in the gut, or during cooking; and keep incompatible ingredients apart in the same product. The technology makes functional foods practical: probiotics that survive the shelf, omega-3s that do not taste fishy, iron fortificants that do not stain flour. It is delivery science applied to food — packaging at the scale of microns.