Stevia has become a popular substitute for sugar. It is much sweeter and is a good substitute for sugar. However, Stevia can be highly processed. If you want to make stevia at home naturally, buy a stevia plant or purchase the pure dried leaves. You can get this easily online. Grind them up using a spice grinder, mortar and pestle to make your own powdered version.
If you are not up for getting a stevia plant of your own or making your own extract, remember to look for a stevia extract that is 100% pure without added ingredients (Trader Joe’s has a version in a small bottle).