What do you recommend?
con-si-LIATE — the 'gli' is a palatal lateral, like 'lli' in 'million'. Four syllables total.
When you are unsure what to order and want the staff's recommendation. Works equally well for food and wine.
'Consigliate' is the second person plural of 'consigliare' (to recommend/advise). This is the standard way to address restaurant staff. If speaking to a single person you know well, 'Cosa consigli?' works too.
Cosa mi consiglia?
What do you recommend to me?
Singular and slightly more personal — good when talking directly with the chef
Qual è il piatto del giorno?
What is the dish of the day?
Specific question — restaurants often have specials not listed on the menu
Cosa prendono di solito i clienti?
What do customers usually order?
More elaborate, shows genuine curiosity about local favourites
Asking for a recommendation is a great way to get the freshest ingredient of the day. Italian chefs take seasonal cooking seriously — the answer will reflect what arrived at the market that morning.