The effect of vacuum frying on starch gelatinization and its in vitro digestibility in starch–gluten matricesrelevance, where it may be used to prevent sedimentation, aggregation, and enhance heat and mass transfer. Shear may also lead to the orientation of fat crystals and lead to the formation of new structured products. This review highlights recent research on fat crystallization with a focus on the effects of shear on fat structure at different length scales.