How to make ice-cream in a bag
What you need:
I spoon of sugar, 1/2 cup of "half and half" (牛奶和奶油的混合物)，1/4 spoon of vanilla extract(香草精), d add 1 spoon of sugar, 1/2 cup of "half and half" and 1/4 spoon of vanilla extract to the small bag.
Next, add three glasses of ice 10 the big bag. You can add more or less just to make sure that the small bag will be covered by ice.
Then, pour about 1/2 cup of salt into the big bag. The salt helps the ice get cold so you can add more if necessary.
When it's ready, place the small bag in the big bag and seal tightly(系紧). You need to shake the bag for about five minutes.
Finally, take the small bag out. Be careful not to open it. Wipe off(擦去) any salt on the bag. Now open the bag. You can enjoy your ice cream. You can finish all of the work in less than ten minutes.
