For about a week now, though, I've been working with their 3 month supply worksheet. You can find it here--go to the link they have set up to find the spreadsheet. It's AMAZING!
You figure out and type in the names of the recipes you'd make each day for a month (breakfast, lunch, dinner, and snacks) across the top. Down the left-hand column, you type in the ingredients you would use to make the recipes you've put in and how much of each thing you'd need under each recipe.
I have also set up hyperlinks to the recipes I will use, so all I have to do is click on the name of the recipe, and it takes me right to it. Lovely!
Oh, I can also type in how much of something I have on hand, and it will tell me how many I still need to buy. Voila! Inventory not a stressor anymore.
Love it! If you're working on getting your food storage set up, this is definitely the best way I've seen to get it going. Check it out.