Answer:

icewater

AnswerCrossword Clue
ICEWATERDiner freebie
ICEWATERFree drink at restaurants
ICEWATERWhat flows in the veins of the unflappable?
ICEWATERRestaurant freebie
ICEWATERSlush, essentially
ICEWATERCold drink
ICEWATERZero-calorie drink
ICEWATERThirst quencher
ICEWATERVein contents of the unflappable?
ICEWATERFreebie restaurant drink
ICEWATERDiner serving
ICEWATERMetaphor for stoicism
ICEWATERSummer pitcherful
ICEWATERBus boy's first chore.
ICEWATERScarce potable in N.Y.C.
ICEWATERCold drink.
ICEWATERRoom-service request
ICEWATERIf I were cat, I'd drink it
ICEWATERSummer cooler
ICEWATERCommon restaurant request
ICEWATERRestaurant offering
ICEWATERFree serving at a restaurant
ICEWATERNoncaloric cooler
ICEWATERCooler in the summer
ICEWATERZero-calorie cooler
ICEWATERNoncaloric thirst quencher
ICEWATERDrink on the house
ICEWATERRefreshing beverage
ICEWATERRefreshing no-cal drink
ICEWATERVein contents?
ICEWATERContents of a fearless person's veins, reportedly