"Rich pot pie, perfect evening comfort food on a cold night! It is labor intensive and expensive, but the end result is worth the effort-- avoid short cuts and substitutions if possible.
Lobster stock is the easiest way to cut down on cost without sacrificing taste. A great stock made with lobster carcasses (not claws) will have a distinctive, redolent lobster flavor. Therefore, you can cut back somewhat on lobster meat if you really need, & fill the pie primarily with veggies or frozen langastino tails. Carcasses can often be purchased very cheaply from fishmongers or restaurants."