When you're prepping millet for your mushroom spawn, remember to adjust the water content to hit that ideal 50% moisture level. Start by soaking millet for about 24 hours. This step allows bacterial endospores present in the grain to germinate and excessively hydrate the grains. After soaking, thoroughly wash the millet under cold running water. It helps remove any debris and prevents grains from sticking together. Next, add the soaked millet to boiling water. Keep an eye on your pot; you want to simmer until each grain has doubled in size with all water absorbed. The water grain ratio here is key; too much or too little can drastically affect your final product. Once boiled, strain using a colander and spread out on a baking tray lined with foil allowing it to dry naturally. By following these steps diligently, you'll be preparing millet for grain spawn at its optimal moisture content; ready for inoculation with mycelium and subsequent mushroom cultivation.