You can use any recipe you like. Here I am using a simple one:Milk+Suger+Flavor
You will need:
2 reuselable plastic bags one bigger one small
some milk
some suger
2 trays ice cubes
some salt
1 bowl
flavor
step 1:put the milk in bowl
step2: put some salt,milk,suger and some flavor fix it
step3:poor the liquid in the plastic bag
step4:fill a bigger plastic bag with ice
step5:put the salt in the plastic bag with ice
step6:put the little bag in the big one
step7:shake it during 3 minute
You could put different ice cream bag into the big one
For example:strawberry,chocolate,vanilla, mango,lemon.....
Last open the plastic bag you are done