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: 40 minutes plus 2-24 hours hanging
Cook: 1 hour and 30 minutes
Prep: 10 minutes
Cook: 8 - 10 minutes
Prep: 20 minutes
Cook: 10-15 minutes