If you don't like the bread, you can use it as a base to make a carbonated drink. This has been done in central Europe before over a thousand years, it is called kvass in most countries.
Boil a gallon of water. Add 4 slices of toasted rye bread, a handful of dark raisins and a handful of sugar. Let that stuff in the water to cool. After cooled, sift out solids, and place liquid in a glass container.
Add a fresh handful of raisins, and about a teaspoon of yeast. Let that ferment for 2 days in a warm place. Filter the drink though a cloth, and add some fresh lemon juice to the drink.
The drink will be like a mild hard cider, with alcohol about 1%. You can also add brandy if you want a harder drink.
I also use strawberries when they are in season to sub for raisins.
