make (someone's) mouth water - if the smell or the sight of food makes your mouth water, it makes you want to eat it.

The restaurant had a selection of mouth-watering desserts.

• at the double
• at the drop of a hat
• at the eleventh hour
• at the end of the day
• at the expense of
• at the expense of something
• at the hands of
• at the hands of someone
• at the helm
• at the helm of
• at the helm of something
• at the latest
• at the mercy of
• at the mercy of someone
• at the mercy of something
• at the moment
• at the most
• at the outside
• at the point of
• at the point of something
• at the ready
• at the ripe old age of
• at the ripe old age of something
• at the top of agenda
• at the top of lungs