Today we have a pretty clear idea where our food comes from: the grocery store. Of course, we know that food is actually grown and raised on farms, but most Americans today have spent little to no time at a farm or ranch. True, some keep a garden, raise backyard chickens or hunt, but for the majority of us, food comes from the store and is wrapped in plastic. Author Eric Knight would like to change that. He encourages Texans to get outside and find their food by foraging for the edible plants. Knight will introduce foraging with a book talk and signing on March 26 at the Garden.