The phrase "extra teaspoon" refers to having more than what you need or expected of something. It indicates an increased amount or an additional quantity of something, usually in a casual or informal way.
Sentences with «extra teaspoon»
You may need a couple of extra teaspoons of oil. (louiseroe.com)
Start with 3 teaspoons of cornstarch and add extra teaspoon if necessary. (bakinandeggs.com)
Yesterday, I was making the cookies and had a couple extra teaspoons of almond flour left in the bag. (elanaspantry.com)