Sorghum is a grass related to corn, milo, Sudan, etc. It's grown for forage, silage, molasses, ethanol, flour, etc. I grow sweet sorghum for sorghum molasses or sorghum syrup. It grows to around 14 feet tall and once the seed reaches maturity and the sorghum juice is at it's sweetest, we cut the seed heads off, strip the leaves, then cut the stalks or cane down, squeeze it in a 130 year old mill, then cook it until it reaches the constancy of honey. You use it on biscuits, pancakes, for cookie and candy making. It's high in iron so it's used as a supplement for iron deficiencies. Here are a couple videos. Our operation has changed a bit since these videos, but the process hasn't. It's very labor intensive, but a lot of fun.
