Candy Apple Beer





Introduction: Candy Apple Beer

About: Hi, my name is Britt Michelsen, I'm a Chemical Engineer especially interested in Computational Fluid Dynamics. To balance all the theoretical work I like to make stuff in my free time.

In this instructable I'm going to show you how to make instant candy beer. As kids we often pretended that the apple juice we were drinking was beer. I wish I had know more about science back then since our "beer" was always lacking the perfect foamy head.

Btw. I am legally allowed to drink beer now and still prefer drinking apple juice, so it certainly has done no harm.

Step 1: Ingredients and Chemistry

Ingredients (for  four glasses):

  • 4*1.6 g baking soda
  • 0.3 g soy lecithin
  • 5 g citric acid
  • 1 pint of apple juice
  • (sugar)

  • Analytical balance

Chemistry and math (yes, they can be fun ;-)):

Baking soda also known as sodium bicarbonate or sodium hydrogen carbonate reacts with an acid to carbon dioxide (among other products):

With citric acid baking soda reacts to trisodium citrate, water and carbon dioxide:

They are the main ingredients in sherbets and responsible for the fizzing. In order to stabilize the carbon dioxide bubbles, soy lecithin is used.
Soy lecithin is a phospholipid, with a hydrophilic 'head' (attracted to water) and a hydrophobic 'tails' (repelled by water). The water-loving ends of the lecithin orient themselves towards the water molecules and thereby stabilize the foam.

In order to calculate the ratio of citric acid to baking soda take a look at the second equation. Citric acid has three protons, therefore for each molecule of citric acid three molecules of baking soda are needed.

3 mol baking soda are 252.03 grams and 1 mol citric acid are 192.43 grams. So if we are using 5 grams of citric acid as in this example we will need about 6.55 grams of baking soda.

Step 2: Mixing

Start by measuring 0.3 grams of soy lecithin and carefully mix them with one pint of apple juice. Don't use a blender or you will end up with a foam at this point. Measure 5 grams of citric acid and add it to the apple juice, soy lecithin-mixture. Depending on how sour you like a drink you might want to add one or two teaspoons of sugar, to mask the taste a bit.

Fill up four glasses with a 1/4 pint each. You will need 1.64 grams of baking soda for each glass. Simply pour the baking soda into the glass and it will immediately start to foam.

Enjoy your drink!

PS: Thanks to kiteman for helping me out with the title and providing me with the fun fact that "fancy a sherbert" between British men means "would you like a beer?"



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    27 Discussions

    Can you just buy citric acid and soy lecithin at grocery stores? Also, if you just wanted to make apple soda rather than having the foam stay would the soy lecithin be necessary? Cool analysis by the way. I never would have thought to do this.

    Is this drink alcoholic? Im underage a d was wondering if I could have this.

    1 reply

    Not really it tastes like sour apple juice. If you don't like that you can just add sugar.

    I would suggest you to use Splenda, a sugar based substitute. It's much sweeter than sugar, but without the aftertaste the other products ( Equal, Sweet & Low, etc.) leave in your mouth.

    If you want to get even more sciency, you can also consider the malic acid content of the apple juice you are working with.

    Interesting and I do like apple cider, preferably hot & spiced or else made into Apple Cyser. Here is an apple cider recipe for you. Very easy to make, tastes very good & will have all your friends coming to visit so that they can have some - - -

    Not true, I wish I could cook like you and I admire how you turn cheap stuff into something awesome

    Thank you Britt, it means a lot! :) I wish I had all the knowledge you have combined with your creativity, believe me, that's amazing!

    I was saying aaaah, ahhh (in a panicky voice) quite a few time during experimenting. It was a lot of fun trying not to get foam everywhere.

    "fancy a sherbert" between British men means "would you like a beer?"

    Really Kiteman? Really? Having lived in these green and blessed isles for 31 years now, I have yet to hear that one in normal conversation.