The primary ingredient used to make bread is flour. Generally, wheat flour is the most common type used, providing the necessary gluten to create the structure of the bread. Flour is mixed with water, yeast, and other ingredients, such as salt and sugar, to form a dough. The yeast ferments, causing the dough to rise and develop flavor and texture. While variations can be made with other types of flour, such as rye or whole wheat, wheat flour remains the standard for traditional bread-making processes worldwide.