in reference to a menu of items priced and ordered separately, i.e., the usual operation of restaurants. This is in contrast to a table d'hôte, at which a menu with limited or no choice is served at a fixed price.
to order an item from the menu on its own, e.g., a steak without the potatoes and vegetables is steak à la carte
table d'hôte - "a restaurant meal offered at a fixed price and with few if any choices"
"In restaurant terminology a table d'hôte menu is a menu where multi-course meals with only a few choices are charged at a fixed total price. Such a menu may also be called prix fixe ("fixed price"). The terms set meal and set menu are also used." Table d'hôte - Wikipedia, the free encyclopedia
I'd probably translate your phrase as simply "Select a dish from the menu", but I think you should clarify exactly what you mean by each term, as I suspect there are different interpretations.