Pavlova? Is that a dog? yuck
No a dessert of large meringue but interior is like marshmallow due to method of preparation and slow cook, topped with whipped cream and fruit or topping of choice - passion fruit, strawberries, bananas, grated chocolate or whatever.
Pavlov was the scientist (not the dog) who discovered conditioned reflexes of salivation in dogs from sound of a bell alone when dog fed at same time as bell rung to initiate the conditioning.