Malaysian cuisine in savoury dishes and desserts throughout the country. Coconut oil is used for cooking and cosmetic purposes, and may be either obtained by processing copra (dried coconut flesh) or extracted from fresh coconuts as virgin coconut oil. Coconut water, the clear liquid found inside the cavity of each coconut, is a popular cooler in Malaysia's hot and humid climate. "Gula melaka" is unrefined palm sugar produced from the sap of the coconut flower. It is the most traditional sweetener in Malaysian cooking and imbues a rich caramel-like flavour with a hint of coconut. Coconut fronds are traditionally used to wrap
Fermi liquid theory non-interacting fermions), and why other properties differ. Important examples of where Fermi liquid theory has been successfully applied are most notably electrons in most metals and Liquid He-3. Liquid He-3 is a Fermi liquid at low temperatures (but not low enough to be in its superfluid phase). Helium-3 is an isotope of helium, with 2 protons, 1 neutron and 2 electrons per atom. Because there is an odd number of fermions inside the nucleus, the atom itself is also a fermion. The electrons in a normal (non-superconducting) metal also form a Fermi liquid, as do the nucleons (protons and neutrons)