Baking – Storing bread dough before baking

As you probably know, volkornbrot and similar breads are designed to bake at a lower temperature for a longer time. 240 C sounds way too high to me. 150-180 C should be about right, and leave the bread in for a long time (up to 3 hours), until the loaf starts to pull away from the sides of the pan. Even after this baking process, because the bread batter is much wetter than a standard bread, you should not slice or eat the bread until it has had time to cool and "rest," about 24 hours. If you slice it right away, the heat and moisture escape and the inside is still doughy/raw. If you wait, the moisture will have time to distribute throughout the loaf and the inside will firm up. Just be patient! The benefit is that the loaf should last for a very long time wrapped in plastic, especially if you put the unused portion in the fridge.

As eggs are a very versatile ingredient: when substituting, it is important to determine whether the eggs are being used as a leavening agent or binder (or both). In recipes where the egg is used primarily as a leavening agent, I have used a mixture of baking powder (not soda), water, and vegetable oil in a 2:3:3 ratio, though you may want to experiment with the proportions depending upon your recipe. You may also need to vary the amount of other liquid in the recipe.

Where the egg is used primarily as a binder, you could use banana, applesauce, or gelatin, depending upon the recipe (obviously, you'll probably want to avoid the fruits in a savory recipe). I've used, and been thoroughly disappointed with, the available commercial "egg replacers" and don't recommend them for any purpose. I've heard of using flax, but have no personal experience with it.

However: as the father of (and resident chef for) a young child with egg and milk allergy, it is my experience that successfully substituting for eggs is very difficult. For breads in particular, I don't even bother with recipes that call for eggs or milk, and favor those that use the basic 3 (4): flour, water, yeast (salt).