I recommend using strawberry jam in place of the strawberry sauce if you can't find the Coldstone variation. Don't try using something like Hershey's strawberry sauce or another thinner strawberry topping, it just runs out and you end up losing the sauce completely. We tried it with eight different options and the Coldstone strawberry sauce was the only one that worked, so I'd replace with jam (that will stay put) if you can't find Coldstone!