A friend recently asked me a great question: if she dehydrates a homecooked meal to rehydrate on the trail, how can she know how much water to add? That's a seriously great question. I pretty much use one of three different techniques: 1) Follow a recipe meant for dehydrating and rehydrating; it'll tell you how much! 2) Weight your meal before you dehydrate it. Weight it after dehydration. Convert the weight difference to the amount of water, and use that amount when on the trail! 3) Just cover the food with water for 10 minutes and let it set. Add enough water that it is covered again, bring to a boil and then you're good to go! Sometimes, this will be a little runny, so you can add some potato starch to thicken it up (depending what it is!) Do you have any other tips for rehydrating food on the trail?