The crystallization of n-alkanes has been investigated in a number of confinement geometries . The confinement in nanopores or microcapsules results in a stabilization of rotator phases in general, and transient or metastable rotator phases in particular . The same studies showed that n-alkane phase transition temperatures are reduced inside nanopores. In n-alkane mixtures, both alkanes only cocrystallize if one alkane is no more than 22% longer than the other . If one n-alkane is much shorter and acts as a solvent for the other, the crystallization temperature of the longer alkane has been found to be significantly reduced . While there are numerous studies investigating the organization of shorter n-alkanes in lipid membranes , we are not aware of any studies reporting on the crystallization of nalkanes (or other purely hydrophobic molecules) inside lipid membranes. Filling this obvious gap will be beneficial for better understanding more complex biological problems such as the crystallization of drugs in lipid/polymer nanoparticles or the role of triglycerides in lipid-droplet formation.