floating island  
noun [ C ] uk/ˌfləʊ.tɪŋ ˈaɪ.lənd/ us/ˌfloʊ.t̬ɪŋ ˈaɪ.lənd/
  (SWEET FOOD)      
 漂浮岛(由蛋奶沙司、蛋白酥和奶油做成的甜点)
a sweet dish consisting of custard, soft meringue and cream
  Desserts on the menu include a chocolate tart and a delicious floating island. 菜单上的甜点包括巧克力馅饼和美味的漂浮岛。 
 Serve the floating islands in soup bowls.
 - More examples
 - She chose the floating island with vanilla custard and praline.
 - That floating island dessert looks really amazing!
 - Drizzle some caramel over the top of the floating island with a fork.
 - An island of meringue floats on a custard sea in this delicious floating island dessert.