They come from pine cones... by: Matt - Pasta Recipes Made Easy
Hi Sweety,
I assume you're thinking about making fresh pesto? If so, great choice!
Pine nuts, AKA pine 'seeds', are simply the edible seeds of the pine tree.
You know pine cones, those chunky tennis ball-sized things that fall on the ground? Well under each of those hard leaves or scales are pine nuts/seeds.
More info about these is here: http://en.wikipedia.org/wiki/Pine_nut, and if you're looking to buy pine nuts for your kitchen, there's a decent pack on Amazon Grocery here (this little lot will last for ages!).