This huge gourmet grocery mecca, an outgrowth of Le Bon Marché department store, stocks every gourmet substance you could possibly imagine, and many that you couldn’t. Sculpted sugar cubes, designer mineral waters, truffle-balsamic vinegar, pink salt from the Himalayas—need we go on? It also has an excellent (if expensive) takeout department if you are looking for picnic items. A second address just opened at 80 rue de Passy.