The picture describes the process of making ethanol fuel from corn.
Overall, there are eight main steps in the process, starting with preparing corn from the fields, and ending with the distribution of the product (to the consumed area).
Firstly, corn is harvested and stored in some large buildings. Next, the amount of corn is milled and cooked for 4 hours, which combines with water and boils at high temperatures. Subsequently, this becomes a liquid and waits for fermentation, taking place at least 2 days. In addition, the upcoming stage is separating, which extracts the fermenting mixture. During this process, several solid by-products are released as a result of the extracting step.
Moreover, the three remaining stages are listed to depict how to produce the final products. One of which is that another liquid is also added so that it is ready for purifying, happening for 5 hours to become the purifying ethanol. Finally, the ethanol product is also stored in large containers and delivered to gas stations.