The phrase "to make the icing" means to prepare a sweet and creamy topping that is usually put on cakes, cookies, or pastries to make them tastier and more enjoyable. Full definition
The nice thing about making homemade ice cream when making ice cream sandwiches is that after it's done churning it's still pretty soft. (ahappyfooddance.com)
Some of the smaller heart shapes are intended for making ice cubes only. (crystalandcomp.com)
Instant really boils down to 15 - 20 minutes or so, which is still a record time for making ice cream from scratch. (paleogrubs.com)