The roasting bag allows you to do exactly that, and the primary allure is that you don’t have to clean up a nasty roasting rack and pan with semi-burnt drippings welded to the bottom.

Sear the lamb, one rack at a time, for 1 minute per side or until golden brown, and transfer to a baking sheet. Roast the racks for 10 minutes, reduce the oven temperature to 350 degrees ...

Remove baking pan from oven. Pierce roasting bag, careful of the steam, and drain off any broth. Gently transfer ribs to a ...