French phrase
Combien de temps conservez-vous ~ ?
Meaning
How long do you keep ___?
When to use it
Asks how long something is kept in storage. It is a somewhat practical way to ask about food or goods.
Example dialogue
Combien de temps conservez-vous les restes au réfrigérateur ?
How long do you keep leftovers in the refrigerator?
Nous les gardons trois jours.
We keep them for three days.