about 1 inch (2.5 cm) in diameter. Flavors Flavors include: vanilla, chocolate,  stracciatella  (chocolate chip), caramel, hazelnut,  champagne ,  amaretto , chestnut, mocha, cinnamon, lemon,  mandarin , and raspberry. Many flavors are seasonal. The shelf life is three to five days, refrigerated. Invention Luxemburgerli were invented by the confectioner Camille Studer