Emily L.
Yelp
This place is such a treasure! I first stopped in last year after reading David Lebovitz' blog, and I ended up talking to the owner for half an hour in my broken French. However, in the intervening year I managed to use or give away almost all of my purchases, so this year I had to return for more! Sadly, I didn't see my friend again, but the staff was wonderfully helpful and the goods are the best.
G. Detou = J'ai de tout = "I have some of everything," so that's what you can expect here. Most of what they have is super-specialized baking stuff, like chocolate and sugar flowers, but I come here for truffles, cherries in syrup, Faillot and Pommery mustards, tinned sardines with lemon zest and other delicious souvenirs. They're pricey (it's Paris) but far less so than at other shops; I can get a jar of mustard and a bar of chocolate for 5 Euros, and they make a nicer gift than a T-shirt or keychain.
Note: Don't miss the second half of the shop, right next door, which is refrigerated -- olives, meats, all kinds of other lovely things. Enjoy!