What if the Germans took more notice of George Washington Carver's research into peanuts for agricultural use during WW1? I am not sure if it would have made a difference or that peanuts would have grown well in European climate conditions, but the benefits are immense. The re-nitrization of the soil without pulling nitrates from war production is tremendously helpful considering that weak harvests were disastrous for Germany later in the war. Plus, as Carver discovered later, the fats from peanuts can be turned into fuel (oils), into soap, artificial rubber, and other products that were in short supply to Germany during the war. Not only that, but the fats inherent in the food itself could fill a gap in German diets that the war shortages had created.
I am also aware that German shortages were caused by coal deficits that prevented trains from distributing food from the country to the cities. However, the increase in food production hopefully would drive the prices down for the black market making food more affordable to everyone. Thoughts?