This is one of those great dishes that accentuates your "chef's touch" by its home-made appearance: so hearwarming and comforting. I suggest you make this dish just before the guest arrives and keep it warm in the oven: the aroma will surely draw your guests into the kitchen.
My famous chowder. I spent some time try to figure out the exact measurements of ingredients; but it's a flexible recipe. Be creative! You can cook this ahead of time (even 2-3 days; just be sure you don't nibble @_@); this soup tastes better with time.