Not in 7 years, anyway! It does tend to concentrate a bit--you may need to use slightly less.
"Pure" vanilla extract should have an indefinite shelf life but you will have to look at your bottle for a list of ingredients. Modern commercial extracts (despite being advertised as "pure") will have corn syrup and artificial colorings added which may spoil over time.
I have some pretty old vanilla extract and have never had it "spoil", although it does seem to develop a precipitate in the bottom of the bottle.
Chocolate can become rancid.
Yes, vanilla wafers are not good to feed your dog as they have sugar in them.
Vanilla is not toxic to cats and it will not harm them if they eat something with vanilla in it. They really do not need vanilla in their diet so there is no reason to feed it to them in their regular diet.
It is neither good nor bad. It is used by the teaspoonful.
You can use is to make vanilla pastry, vanilla sugar, vanilla ice-cream, practically anything! Just search on good food, or any other food websites, for recipes using vanilla pods and there you go!
Vanilla Wafers do not give dogs worms but the sugar content, if given in excess, is very bad for a dog's teeth.
Even though vanilla taste bad by itself, it can taste different when you add ingredients because vanilla is such a thin (not as powerful) formula it is easy for other ingredients to sink into it. For Example: If you add sugar to vanilla it will change its flavor because the sugar has made it more sweet. The same thing will happen with brown sugar, too. If you add a wiped egg yolk with vanilla it will also change its taste because an egg yolk has a different flavor. The flavors will combine to make a new one. Vanilla might have a strong taste but it is not a strong ingredient.
go to the store and buy some
No; Vanilla Ice's first album sold 48 million copies as of 2010. Mc Hammer was the first to go diamond.
It is predicted that the price of ice cream will go up in 2012. Most ice cream manufacturers use the spice vanilla to help flavor their ice cream, particularly vanilla or French vanilla ice cream. Because there is a shortage of vanilla (as of spring 2012), ice cream prices may rise to help cover the costs of vanilla.
no
It's most likely the high alchohol content that gives you the idea of it tasting bad.
Vanilla is only manufactured in a few countries around the world so if one or more of those countries has a bad season and thus produces less vanilla, we have a problem. As of spring of 2012, vanilla prices may rise due to a major fall in the production of this sweet, and highly sought after, spice.