To substitute stevia for processed sugar in recipes, use 12 packets of powdered stevia blend or 2 1/2 teaspoons of liquid stevia per 1 cup of sugar. Packet sweeteners are typically equal to one another, and one packet is equal to 2 teaspoons of sugar.
Conversion charts are available on CookingWithStevia.com, Stevia.net and SweetLeaf.com, as of April 2015. There are multiple brands of stevia available. Conversion charts may differ depending on the brand, as brands vary in terms of flavor and sweetness.
Stevia is a sweetener that is available in powder or liquid form. The active compounds in stevia called steviol glycosides are primarily made up of stevioside and rebaudioside. Brands with a high amount of steviosides provide a sweet taste without much bitterness. Brands may combine stevia with a weaker sweetener, such as maltodextrin.
Pure stevia powder can be difficult to use due to its strength, as 1 teaspoon is equivalent to 1 cup of sugar. One method of using stevia powder is to dissolve a teaspoon of the powder in 3 tablespoons of water, then placing the solution in a dropper bottle and storing it in the refrigerator.
Stevia's taste takes longer than sugar to set in but also lasts longer. Unlike sugar, stevia doesn't have a significant effect on blood glucose levels.