At “NutritionData.com”:http://www.nutritiondata.com/ , you can enter any recipe or food and get an exact breakdown of what’s in it. I’ve been mostly vegetarian for about three years now and I’ve been off and on worried about whether I’m getting the right nutrients to be healthy. Now I can find out exactly what I’m eating down to which amino acids I’m getting from what foods. As an example of the level of detail this site goes into, here are some graphs that came up after I searched for white mushrooms. It turns out mom was right, they are good for you.