Rewena bread Rewena bread Rēwena parāoa (literally, "leavened bread," also spelled rewana) is a traditional Māori sourdough potato bread. Rēwena means both "bread made with potato yeast" and "the process of fermentation that causes bread to rise." The Maori word for potato, 'riwai' (sometimes spelled 'rewa'), is the root word of rēwena. Rēwena bread uses a pre-ferment starter, also called a ‘bug.’ It is created by boiling and mashing potatoes, then adding flour and sugar. Kumara, or sweet potatoes, may also be used. The mixture is then allowed to ferment from one to several days, depending on the ambient temperature and humidity.
Substance abuse of substance abuse. The most common chemical substance which is abused by pop musicians is cocaine, because of its neurological effects. Stimulants like cocaine increase alertness and cause feelings of euphoria, and can therefore make the performer feel as though they in some ways ‘own the stage’. One way in which substance abuse is harmful for a performer (musicians especially) is if the substance being abused is aspirated. The lungs are an important organ used by singers, and addiction to cigarettes may seriously harm the quality of their performance. Smoking causes harm to alveoli, which are responsible for absorbing oxygen.