Smart choices. Great taste. Better mornings.

General food information—not medical advice

Breakfast cereal guide

Breakfast Cereal and Grain Glossary

Plain-language definitions for cereal, grain, bran, germ, endosperm, whole grain, flake, puff, extrusion, muesli and granola.

Cereal terminology can describe a plant family, a breakfast product or a manufacturing method. Context matters.

Core grain terms

TermMeaning
BranOuter layers of a grain kernel
GermEmbryo portion of the kernel
EndospermStarchy interior of the kernel
Whole grainGrain ingredients retaining major kernel components under local definitions
Refined grainGrain milled to remove some components

Product terms

TermMeaning
MuesliLoose mixture commonly based on rolled grains with fruit, nuts or seeds
GranolaBaked clustered mixture, often using oil and a binder
FlakeThin cereal piece made by rolling or forming
PuffExpanded grain or grain mixture
Shredded cerealLayered or woven strands of cooked grain

Label terms

Fortified, enriched, gluten-free, organic, natural and high-protein are governed or used differently across markets. Check the definition and package in your country.