Butter--one pound per person. You'll be keeping it in your freezer to make it last longer, so buy as much as freezer space allows.
The bad thing about fat is that it goes rancid quickly. So check the expiration dates on your shortening. You have about a year to a year and a half to use it, so try to cycle through it as best as you can.
It's good advice as you consider adding things to your food storage that things with fat won't last as long. Which means nut products (peanut butter, candy with nuts, etc.) and chocolate don't last well. By all means store things like peanut butter and chocolate chips, just be aware that you can't buy it and never think about it again like you would with wheat or dried beans. You'll have to remember to cycle through your storage. The good news is that fatty things usually taste the best, so it shouldn't be too hard!
If you have shortening that's about to expire, use it for deep frying. Make a batch of french fries or try making donuts.
If your fat products have kind of a weird smell, then they have probably begun to go rancid. Throw it out! I once made a pie crust without realizing the shortening had gone bad. I could have kicked myself! All the work of a homemade berry pie and nobody wanted any after the first bite.
The moral of the story is to use what you have!
