すみません、これ、もう一つお願いします。 — Excuse me, one more of this, please. (Izakaya, Formal — to staff, JLPT N5)

Gesture & etiquette

Raise a hand slightly to get attention, then point clearly to the empty dish or menu item.

Ensure you clearly indicate which item you want by pointing to the empty plate, menu picture, or describing it if necessary. Avoid shouting or being overly demanding.