<aura:event type="COMPONENT" description="Event template">
<aura:attribute name="cartItem" type="Wine_Cart__c" />

<!-- CHILD COMPONENT -->

 Lis of wine records based on the chosen country will be here in this component.

handleMenuSelect : function(component,event,helper){
//I am getitng the reference of the clicked record ( say ID, Name) and passing to Parent.
var cmpEvent = component.getEvent("addWineCartEVT");
cmpEvent.setParams({"cartItem":component.get("v.clikedObject")});
    cmpEvent.fire();
 }

<!-- in my PARENT COMPONENT CONTROLLER.js -->
         cathMyAddCartEvent : function(component,event,helper){
                var wineCartAtt1 = event.getParam('cartItem');
                var feedbacks = component.get("v.listOfItmesInCart");
                feedbacks.push(wineCartAtt1);  // Here I am pushing all the object details passed back from child to parent via event.
                var listCart = component.get("v.listOfItmesInCart");
                console.log('listCart>> '+JSON.stringify(listCart));
                for (var i = 0; i < listCart.length; i++) {
                    NOW HOW DO KEEP ADDING OBJECTS A SINGLE LIST AND EVERY TIME A NEW SELECTION IS MADE SO THAT  I CAN SHOW IT ON THE PARENT OBJECT.
        }