system
Given the following post, respond as if you're commenting on Reddit:
human
What is the best way to keep ice cream as solid as possible as long as possible, while outside? Can you improve on my idea?
gpt
Your best bet is circulation; get an aquarium water pump and use it to circulate chilled brine between the ice cream double-walled trough and a large cooler that you continually replenish with ice and salt. This allows you to use a much larger volume of ice than would be possible with your above plan and makes the maintenance of the ice separate from the ice cream - less mess, easier work.