Elchanan Bread Bakery in Kibbutz Mishmarot turns leftover baked goods into bread pudding and granola. It also donates stale bread to nearby kibbutzim for animal feed. In its latest process it mixes excess sourdough bread with malt and hot water to make a red ale with an alcohol content of 5%.
https://www.calcalistech.com/ctech/articles/0,7340,L-3776048,00.html