Hazelnut and Chocolate Chips Biscotti

Somewhere I read that there are two types of biscotti. The dry and crisp, and the rich and buttery...

I personally prefer it to be crispier, just like those served with a cup of hot latte in a cafe. The difference in the recipes is simply to omit the butter.

I've fallen head over heels for hazelnuts recently, especially when it pairs up nicely with bits of dark chocolate.