Opt B

{
menu: "M1",
qty: 6,
items: [
    {
        name: "main course",
        components [{
            comp: "prodMCA",
            qty: 6
        }]
    },
    {
        name: "boisson",
        components [{
            comp: "prodBA",
            qty: 6
        }]
    }]
}

{
menu: "M1",
qty: 6,
items: [
    {
        name: "main course",
        components [{
            comp: "prodMCB",
            qty: 6
        }]
    },
    {
        name: "boisson",
        components [{
            comp: "prodBB",
            qty: 6
        }]
    }]
}