Sims can now order ordinary ice cream at Seasons market stalls (<strong>Cool Kitchen Stuff Pack required</strong>). The additional package will allow you to also buy icecream at islandBBQ stalls. You will need the main package for it to work, though.
These were made for EP01 - Get to Work retail stores. They are retail fridges that you can stock with items and sims will purchase from them autonomously while in your store. They will also keep items, like fish, from spoiling as fast.