This is something you need to become familiar with because one of the best substances that you can use for creating delectable yogurts is yogurt starters. Essentially, all this starter is a carefully blended balance of bacteria that consume lactose. These starter packs can come in varying thicknesses and flavors and are a good way to start your process.
But, they are not required if you wanted to avoid using them. A good alternative is to either use a few tablespoons of good old-fashioned homemade yogurt or to even use store-bought brands. Experiment with the options and whichever yields the best results, make that your go-to option.