French phrase
Je voudrais ~ en plus, s'il vous plaît.
Meaning
I would like an extra ___, please.
When to use it
A polite request for an additional serving of food. Common in restaurants and cafeterias.
Example dialogue
Je voudrais une portion de riz en plus, s'il vous plaît.
I would like an extra serving of rice, please.
D'accord, je vous apporte ça tout de suite.
All right, I'll bring that right away.