Levure in French means Yeast ( a raising agent used in bread, etc ).
A tortilla is a flatbread; it does not have a raising agent.
It is used as a raising agent.
The lack of a rising agent, most commonly yeast, used in the baking procees.
The most usual raising agent for bread is yeast, though other things like sour milk and baking soda are sometimes used. However, yeast is not a substance, it is a living organism, specifically a fungus. It produces carbon dioxide when it respires, and this is what actually inflates the dough.
yes. they're small living things inside of the yeast
It can be used as a raising agent
No. Bagels are definitely leavened.
Yeast is used as a leavening agent. The product, bread, will have a softer and lighter result
Peanut butter can be used in yeast bread as long as it is used to replace some other fat called for in the recipe.
It can be used, although not with very tasty results. Self Raising Flour is a flour that has been pre-mixed with Yeast, although Yeast alone has a very powerful, pungent smell, its what gives bread most of its flavour. Using Strong White Bread Flour and Yeast seperately and not Self-Raising yields much better results and can be varied to suit any recipe.