The "Summer Bello Party" Minions menu is part of the McDonald's Hong Kong McCafe menu. It includes a Banana Chocolate Roll Cake, Iced Banana Chocolate (i.e chocolate milk with a dose of banana flavor), Philippines Mango Frappe (seems like more a general summer drink that just got thrown in), and hot Banana Chocolate (i.e. hot cocoa with banana flavor). To carry on the menu theme, the iced drink cup features a Minion design and the Banana Chocolate gets a stenciled cocoa Minion design on top of its foamed milk.
Furthermore, you can also score a cutlery set (spoon and fork), featuring one of three Minions, for an additional charge when you buy some (Minion) food.