Vegetable shortening substitute for chocolate recipe?

[Leea]

I'm triyng to make chocolate according to this vid: http://www.youtube.com/watch?v=Y7SQVYqYE64

But He says I need some Vegetable shortening. Can I use vegetable oil? Or Extra virgin olive oil? I'm pretty sure butter wont taste too good. :P

[TheUnknownChef]

Butter will give you a crisp/crunchy cookie, shortening or margarine will give you a soft chewy one, vegetable or olive oil will give one like a pancake.

[KMcG]

You can use vegetable oil, reduce the liquid in the recipe by about a teaspoon. Do not use olive oil, it will change the taste. You could possible use butter, but I can't remember the substitution amount.