I have a constant supply of stock in my freezer it makes a base for my soups, stews, pies, sauces and risotto. You can lamb bones easily enough from your butcher or meat supplier at your local farmers market.
Prep: 15 minutes
Cook: 15 minutes
Prep: 20 minutes (plus 30-60 minutes resting time)
Cook: 2-3 minutes
Prep: 10 minutes plus 1 month to develop (minimum 1 week)