The function of a leavening agent in cooking helps to tenderize the ingredients. The ingredients get softer the longer they soak with the leavening agent.
Leavening agent
Salt (NaCl) is not a leavening agent.
my butt
the mayonnaise as a binding agent for your crab cakes
Bananas are not the best leavening agent for muffins. Baking powder is the best leavening agent for baking. Bananas do not rise to the same degree as baking powder.
Most cream puffs do not use a leavening agent. The "shell" or "crust" of the original cream puff uses plain flour and salt, similar to a pie crust. You generally do not want to use a leavening agent as you don't want the shell to "rise".
Do you mean what is a leavening agent?A leavening agent it is an ingredient that makes, doughs and batters softer lighter fluffier buy adding bubbles of air, carbon dioxide or various other chemicals that will react accordingly to moisture.
Baking soda (sodium bicarbonate).
It is a leavening agent - it makes your recipe rise.
Yeast.
Yeast is called a leavening agent. The growing yeast produces carbon dioxide which collects in the dough and makes the bread rise. With out a leavening agent bread would be flat