Acorns represent one of the biggest (and most widespread) calorie jackpots in the annual wild plant food harvest, if you can beat the squirrels to them. These high calorie nuts were a staple crop to many of our ancestors around the Northern Hemisphere and we can still rely on them for food today. Coming in at 2,000 calories per pound, this abundant of a food crop is too valuable to ignore. You can even use them to make medicine. Here’s how.