If I were in Paris, I would probably have an impossible decision to make if I were to buy only one Bûche de Noël since almost every patisserie makes a Buche de Noel. Sadly, I won't be in Paris, but if you are, here are two outstanding places.
There are beautiful Bûches de Noël by Pierre Herme (Paris). One of the Bûche de Noël is a Chuao Chocolate Buche with Cherry Accents and another is a Buche with chocolate and caramel. Alexis Mabille has created a couture Bûche de Noël for Chocolaterie Angelina. Mabille put his stamp on the traditional yule log with the pastry chef Sebastian Bauer, opting for a heart of creamy chestnuts, candied apple and a confit of yuzu and lime surrounded by milk-chocolate ganache and crisp pecans. Mabille’s bûche is not a log, but a "Cocoa" Chanel bag: quilted and studded with edible silver buttons, topped with Mabille’s signature silver bow. And, almost every patisserie has its own version.
And, since I'm located in the San Francisco Bay Area, I thought I'd post several (but definitely not all) bakeries in the area that make Buches de Noel. Get your orders in now.
Buche de Noel: San Francisco Bay Area:
Tartine (SF) (Genoise filled with espresso buttercream, meringue mushrooms, pistachio moss, Valrhona chocolate Glaze)
La Farine, (Rockridge, Piedmont, Fruitvale)
b. patisserie, (SF): 4: Chocolate Coffee Caramel, Coconut/Passion Fruit//Pineapple//Mango, Smore and Vanilla with Red fruits.
Bi-Rite (SF): TCHO Chocolate Buche de Noel
Miette (SF, Marin, East Bay): Traditional
Craftsman and Wolves (SF- 2 locations): Coffee, Hazelnut, Yogurt & Caramel
La Boulangerie de San Francisco (multiple locations)
Bouchon (Napa). Two sizes of traditional Buche
La Bedaine (Berkeley): Three flavors
Sweet Things (Tiburon & SF)
Fleur de Cocoa (Los Gatos)
Douce France (Palo Alto)
Tout Sweet Patisserie (San Francisco and Palo Alto)
Cafe Madeleine (San Francisco)
Arizmendi Bakery (Oakland)
Masse's Pastries (Berkeley)
Sweet Bar Bakery (Oakland)
Fournee Bakery (Berkeley)
Sweet Adeline Bakeshop (Berkeley)
Most fine bakeries and patisseries make Bûche de Noël for the holiday. Check out your local.
And, lastly if you don't want a whole Bûche de Noël, several restaurants have Bûche de Noël by the slice on their dessert menus. Check with your favorite French restaurant.