Refers to any dough made with only flour, water, salt, and yeast as its primary ingredients. Variations, such as Oreganato, Cajun Three-Pepper, and Pumpernickel fall into this category, because they have no sugar, oil, eggs, or milk. French-style breads have crackly crusts. Milk, eggs, or oil will produce soft crusts better suited to loaf-pan breads.