Instant Ice Cream
Equipment & Ingredients
- One small zip-resealable sandwich bag
- One large zip-resealable plastic bag
- 120ml (1/2 cup) cream or full fat milk.
- 12.5g (1 Tbsp) sugar
- A few drops of vanilla or other flavouring of your choice
- 3-7 cups of ice
- 75g (5 Tbsp) salt
- Add the cream, sugar, and vanilla to the small bag and seal, ensuring that any excess air is released.
- Place the ice, salt and cream-filled bag into the larger bag and seal.
- Vigorously shake the large bag over a sink for approximately 5 minutes. Stop when the cream has started to freeze and turn into a solid.
- Remove the small bag and quickly rinse off the salt solution with cold water.
- Pour the ice cream into a bowl, add your favourite toppings and enjoy eating your newly frozen dessert!
The Science Behind the Homemade Ice Cream
Ice cream is an emulsion, or a mixture of two liquids (water and fats) which do not normally mix together. To make ice cream, the milk or cream mixture needs to change its state from a liquid to a solid. If the mixture was simply placed straight into the freezer, the water component would freeze first, forming large, crunchy ice crystals. Ice cream tastes better when it is creamy rather than crunchy, so the goal in ice cream making is to create the smallest ice crystals possible. By vigorously shaking the bag, any large ice crystals that may be forming are broken up into smaller crystals, resulting in a smooth and creamy ice cream. The freezing point of ice is lowered by the addition of salt, so it starts to melt. As this ice melts it draws heat energy from its surroundings - including the cream mixture enclosed in the smaller bag - cooling it enough to cause the liquid cream emulsion to freeze, changing it from a liquid to a solid and forming ice cream.
» What happens if you do not shake the bag vigorously when making the ice cream?
» If you put too much ice cream in your mouth, you may suffer from what is called 'brain freeze' or an 'ice cream headache'. Placing your tongue on the roof of your mouth should stop the headache - why do you think this is?
» Taste the ice cream frozen, then taste it again when it has melted. One should taste much sweeter than the other - why do you think this is?
Dr Michelle Dickinson (MNZM)
Dr Michelle Dickinson (MNZM) â prize winning nanotechnologist, researcher and educator â has made it her life mission to make science and engineering accessible for all. Her new book The Kitchen Science Cookbook is packed full of fun ârecipes', each teaching an important scientific principle in a format that is perfect for parents and children to enjoy together. Available on Amazon
Our Back to School 'Must Haves'
Our selection of 'Back to School' Essentials, perfect for organising the shopping list!
Why Chose a Childminder?
As a parent, choosing childcare for your child is one of the most important decisions you will make.
Tim Peake - Out of this World
Tim is one of 3 astronauts on the Principia mission-find out more about the man behind the spacesuit
Proven Reading System
Specifically developed to help reluctant or struggling readers, especially where conventional teaching methods may be failing...
Get 20% off Wallace & Gromit's Musical Marvel
Wallace performs his musical masterpiece My Concerto in Ee Lad with help from his faithful canine companion Gromit…what could possibly go wrong?! This interactive experience has specially created animations and a live orchestral accompaniment. Use your Raring2go! Membership to get 20% off tickets.
It’s set to be a grand day out for the whole family!
Most children love to help in the kitchen, whether it is preparing a whole meal or baking some tasty treats. We have lots of yummy recipes that the children can help with, and that the whole family can then enjoy eating. Click here to take a look at our recipe section for mealtime inspiration and cheeky goodies to try with the family this summer!!!