How do you remove an inflated menu/items from the new Lollipop Toolbar?

I include a v7 Toolbar in my layout.

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/white"
    />

I'm inflating a menu into it with the following:

mToolbar.inflateMenu(R.menu.options_add_contact);

Now how do I know remove/reset it? I've tried a couple shots in the dark:

• inflating an empty menu
• mToolbar.inflateMenu(0)
• moolbar.setMenu(null, null)
• toolbar.setMenu(null, null)

I am not entirely sure if this is what you mean nor have tried it but.

mToolbar.getMenu().clear();

should clear the menu.

I have still been using onCreateOptionsMenu for all my menu creation however