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I get andy’s frozen custard every week lately but since i drive I can’t enjoy it till I get home and it’s all melted.

How long do i need to keep it in the freezer for when i get home to get it back to it’s original state of when it was served to me?

Knowns

I live in texas and the outside temp is about 90 degrees

The car is kept at 68 degrees Fahrenheit

The drive one way is 10 minutes

My freezer is 0 degrees Fahrenheit

The walk from my car to the freezer is about 1 minute

It is a large concrete shake from andy’s frozen custard

There are brownies and peanut butter cups mixed in

I dont know the temp they serve it at but prob 32 Fahrenheit or slightly less