Fragrant, tender and chewy, the ideal homemade bread can be elusive. Even if you're an experienced baker, you may find that the same recipe never turns out exactly the same way twice. The reason is that atmospheric changes can alter the bread's taste and texture. In general, a dry, crumbly loaf is caused by too much flour, too much yeast or too long a rising period. Through trial and error, learn to adjust your baking techniques for the perfect loaf every time.

Use only as much yeast as indicated by the recipe. Using too much yeast causes the dough to rise rapidly, which can produce a crumbly loaf or a strong yeast flavor.

Start with the minimum amount of flour and add only as much as necessary to create a dough that's soft and smooth -- not sticky or dry. One of the main reasons yeast breads become crumbly is that the dough contains too much flour. On humid days, use more flour; on dry days, use less.

Cover the bowl with a clean kitchen towel and place it in a warm location. The ideal temperature for raising yeast dough is between 75 and 85 degrees Fahrenheit. If the dough is too warm, it will rise too quickly, creating a dry, crumbly loaf. In a cold, drafty place, the bread rises slowly or not at all, creating a soggy, dense loaf.

Check the dough after 45 minutes to one hour. It should have almost doubled in size. Punch a finger into the dough. If the indentation remains, the dough is done. If not, let it rise for a few more minutes. Keep checking the dough, because if you let it rise too much, it may become dry and crumbly. Most bread doughs rise within one to two hours.

Preheat the oven for at least 20 to 30 minutes, according to the temperature indicated in your recipe. Bread is best cooked at high heat -- between 375 and 450 F. This high heat creates a crispy crust and allows steam to develop inside the bread. This steam makes a moist bread.

Transfer the bread to a cooling rack and allow it to cool completely before you slice it. Slicing it while it's still piping hot allows steam to escape, which can dry out the bread.

Reduce the amount of yeast in a recipe by 25 percent, and reduce the rise times, too, if you live 1,000 feet above sea level or more. High altitudes can cause dry, crumbly bread, because it rises more quickly.

Combine the wet and dry ingredients separately, then combine them with a light hand when making quick breads. Overmixing quick breads can toughen them. Use baking powder along with, or instead of, baking soda, because baking powder tends to produce a finer crumb. Cook quick breads just until a toothpick inserted in the middle comes out clean.