If its ice-cream based milkshake, like the stuff you get from McDonalds, neither will keep it right. In the fridge, itll melt and turn to sugary milk. Your best bet is to go with the freezer, then accept itll need some time in the fridge before itll go through a strawer.

Also Know, how long can a shake last in the fridge? “A refrigerated homemade shake can be kept safely for 72 hours,” Blatner says. “However, because separation happens, youll need to re-blend or shake before drinking.

Considering this, can you make milkshakes ahead of time?

Surprisingly, yes! Blend up your milkshake and pour it into your glass, then stick it back in the freezer. Just let it sit out for 5 minutes or so before its drinkable again!

How do you unfreeze a milkshake?

If its completely frozen solid, stick it in the microwave for 15 second intervals until its soft enough for you. I used to do this a lot when I worked at Chikfila because i brought home milkshakes a lot and could never finish them in one sitting.