Mr. T. wrote:If the partygoers are reasonably gastronically adventurous how about escargot? .... I'd be happy to post the recipe that I use - it passes muster with my 4 year old who is a bit of a foodie/critic .
OK, even though my kid eats sushi regularly, you've got me beat there, Mr. T! Hats off to you!
An easy, cheap french dish I like is
salade nicoise: french tuna salad. My version (it's one of those empty-out-the-cupboard recipes, so there are many versions) contains canned (solid white) tuna, chopped nicoise or kalamata olives, capers, sometimes red bell peppers or cherry tomatoes in season, thinly sliced shallot or green onion, sliced hardboiled eggs in a simple homemade viniagrette (2 tbs vinegar, 1 tsp Dijon mustard, 5-6 tbs olive oil.) You can do a warm version including tiny boiled potatoes, blanched green beans, and use a small seared and flaked tuna steak. Though it doesn't
sound elegant, it looks very elegant on the plate
Or there's choucrute, which is sausages, potatoes and sauerkraut (from the German border.) Quiche is really, really easy, as well - but also has German influences that may not suit your theme. A quick google will offer you hundreds of recipes.
Seems also that you should be able to find an inexpensive French cheese and egg dish; souffle springs to mind, although it may not be for the faint of heart - and definitely won't travel well.
Can you do any of the cooking there? If so, french-style mussels (search recipes for moules marinieres) would be cheap and easy - if you could arrive with your mussels cleaned and in the steamer with your sauce ready, they'd steam up in a few minutes and be quite the spectacular presentation.