At some point, the amuse-bouche transformed from an unexpected bonus to a de rigueur offering at Michelin Guide-starred restaurants and those aspiring to that category (as recently as 1999, The New York Times provided a parenthetical explanation of the course). This in turn created a set of logistical challenges for restaurants: amuse-bouche must be prepared in sufficient quantities to serve all guests, usually just after the order is taken or between main courses. This often requires a separate cooking station devoted solely to producing the course quickly as well as a large and varied collection of specialized china for serving the amuse. Interesting plates, demitasse cups, and large Asian-style soup spoons are popular choices. In addition, the kitchen must try to accommodate guests that have an aversion or allergy to ingredients in the amuse.