How many drops of lemon extract equal 1 teaspoon of lemon juice?
There is a difference between extract and juice. Lemon extract does not contain acid. If you needed to do a substitute for 1tsp of lemon extract, it would be 1 tsp of vanilla extract and 1 TBS of lemon zest or peel. Normally, a recipe containing lemon juice needs the acid contained in it. The peel or zest of a lemon has oils and the flavor. Good luck.