Two ways that bacteria are helpful is that bacteria is used in the production of some foods such as cheese, pickles, butter, yogurt, sour cream, and chocolate.Without bacteri … a, pizza would not be possible.acteria is helpful because it can be used to create antibiotics. Also bacteria, including E.Coli helps us, by making a number of vitamins that the body cannot produce. Bacterias can also be helpful in many fun reasons we do not even think of. It is almost EVERYWHERE. It helps make chocolate and other fun foods.