>...mutton stock would be strong i think... Mutton is a from a sheep at least 2 years old, and is stronger in flavor, as well as less tender. (Don't see much of this around.) Yearling is from a sheep 12 - 24 months old. Regular lamb is slaughtered under the age of 1 year. (What I see most times) Spring lamb is 3 - 5 months old. Baby lamb is 6 - 8 weeks old. (Never seen this.) I make lamb stock (regular lamb) and it works out really well. I use the bones from lamb chops and/or the odd leg'o'lam. It's not too strong and takes the addition of chiles very well. I like to use cayennes. Scott... KCK