Caviar From Pepsi





Introduction: Caviar From Pepsi

Hi, my name is Viktor and sorry for my English.

What do you say, if your favorite drink turn into something resembling caviar? In this project we will transform a liquid into sphere that can be eaten with a spoon.

Step 1: How Does It All Work?

To make the caviar from the liquid you will need two main components:

  • Sodium Alginate
  • Calcium Chloride

Sodium Alginate is used in the food industry as an additive E401. It is used as a thickener and stabilizer.
Calcium Chloride is also a food additive called E509. The main application is curing agent in food products. It is a porous bits of white, readily soluble in water.

Of course, Sodium Alginate and Calcium Chloride are quite unusual components, but you can buy them in the online stores.

Step 2: Firstly, Let's Make the Caviar From the Tomato Juice

Mix 100 grams of the tomato juice and 1 gram of Sodium Alginate.

Here we need a mixer or blender. If mixing the powder of Sodium Alginate by spoon it will take a lot of time. The mixer will make it in just a few seconds.

Leave for 10 minutes, so that the powder is completely dissolved.

Step 3: Next, Make a Bath

Mix 5 grams of Calcium Chloride and 1 liter of water. I use plain water at room temperature. Calcium Chloride is readily soluble in water, so the mixer is not needed here.

Step 4:

Take the syringe with the maximum volume and fill the syringe of juice mixture with Sodium Alginate.

Place the syringe over the container with the bath and slowly push the plunger to get a small drop.

As soon as the juice hits the water, starts instant spherification.

It looks like a real caviar!

Wait a couple of minutes to harden the shell.

Step 5:

After that you need to use a sieve to get the caviar and rinse in plain water without Calcium Chloride.

The shell will harden in 15-20 minutes, so to get an explosive effect in the mouth, it is better to eat them immediately.

Step 6: I Made This Experiment With Other Products:

  • Carrot Juice
  • Apple juice
  • Pepsi

For the sake of science I tried everything. To be honest, it is very unusual taste to conventional products in spherical form.

If you still find Sodium Alginate and Calcium Chloride - be sure to try to do it yourself!

Step 7: Also You Can Watch the Video (in Russian)

I hope you like it!

Step 8:

It should be noted that the additives E401 and E509 are allowed to use in most countries of the world as a safe, but subject to concentration in food. Permitted concentration per kilogram of product is not more than 20 grams of Sodium Alginate and up to 10 grams of Calcium Chloride.

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Third Prize in the
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2 People Made This Project!


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57 Discussions

Google Molecular gastronomy

will these melt if you use them to garnish something hot?

So, do these pop in your mouth, or is it more like jello balls? & do those chemicals alter the taste of the balls?

this is awesome. did some research on how popping boba are made. make that water an ice bath and you have popping boba o.<

I use Agar Agar to make Rum caviar. It's nice to serve in a spoon or directly in a cocktail!

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1 reply

thank you!!!

Nice work, looks fun. I tried something similar in the past, it didn't work, I'll use this recipe next time.

No need to apologise for your English, your clearly better at it than a significant percentage of native speakers.

2 replies


I'll include myself in the above

Very interesting looking! Strange to "eat" a "drink"

I tend to use agar agar when making caviar dropplets since it doesn't change the taste too much, but it's less strong if you buy it in the kitchen special

Slick 'able! Somebody must have an easy way to stop/retard/slow the reaction, (possibly as simple as quickly transfering to an ice bath or similar chilly environment, slowing the reaction or diverting its reactive energy) to maintain/prolong the more caviar like texture. Probably end up being sound or microwaves.

Very interesting! These remind me of the Boba you find in Frozen Yogurt shops.


2 years ago

These remind me of Brain Drops from Marbles the Brain Store. I'm curious how healthy those two chemicals are to eat. Anyone know? I'm notntaking about legality, but what they do to the body.

3 replies

Sodium alginate and calcium chloride are pretty much safe, although some sources point out that sodium alginate may interact with certain medications. Also, the dissolving of calcium chloride in water is exothermic so I would not suggest ingesting the plain salt. I wouldn't recommend eating bags of sodium alginate either since sodium alginate is about 1/10 sodium. (molar mass of sodium alginate = 198.05g, molar mass of sodium = 22.99g)

Wow, thanks for the facts! So the verdict would be: generally safe in moderation, it sounds like. Or am I misunderstanding you?