Extract in "vanilla extract" is simply the liquid extracted from the insides of a vanilla bean.
Unless specified otherwise vanilla in a recipe is generally vanilla extract.
It is safe to say that 1 drop of the double strength is equivalent to 2 drops of regular vanilla extract. The best tasting vanilla comes from the best extract or the beans, though.
You can get a bottle of vanilla extract at any grocery store.
There are several good rated brands of imitation vanilla extract, but some of my favourites are Flurber's Imitation Vanilla Extract, and Hopperstein's Imitation Vanilla Extract.
Vanilla extract can be substitute for vanilla essence on a 1:1 basis (e.g 1tsp of vanilla extract is equal to 1tsp vanilla essence), on a strength-for-strength basis at least. But the flavour of vanilla essence will never be as good as the flavour from vanilla extract, no matter how much of it you use.
no
Vanilla extract can be used in place of vanilla bean paste. The equivalent of 1 tablespoon of paste is 1 tbsp. extract.
No, it is not safe to put vanilla extract in your eyes. Vanilla extract is meant for culinary use only and can cause irritation, burning, and damage to the eyes if it comes into contact with them. If you have any concerns about your eyes, it is best to seek advice from a healthcare professional.
unless you want whatever you are baking to taste of mint, no. that is why it is called mint extract, because it is minty, but vanilla extract is vanilla tasting.
No, there are 6 classes of nutrients and vanilla extract isn't one of them.
yes, it is stored at room temperature so there should be no spoiling.