What gas is given off by yeast during baking, forming bubbles to make bread more light and fluffy?
Answer Carbon dioxide
Carbon dioxide is a gas that is given off during breathing and absorbed by trees and plants, then used to produce oxygen. In baking, the fermented yeast gives off carbon dioxide as well, expanding the air trapped inside bubbles and causing the bread to rise.
Asked by Leni Davenport · Last updated 5 years ago · 195K views · SOURCE