how many vanilla beans equals one teaspoon vanilla
One vanilla bean is equal to 1 teaspoon of pure ground vanilla, or 3 teaspoons of vanilla extract. When baking, you should use pure vanilla, and not extract, as the extract aromatic components being to violatize at around 300 degrees Fahrenheit.
It will take approximately one inch of vanilla beans to equal one teaspoon of vanilla. To make your own vanilla extract mix Vodka and vanilla beans and let it sit in a dark place for 90 days.