Fruit “Caviar” – Adventures in Molecular Cooking [3]

“Fruit Caviar” 

Last week I received the elBulli Texturas MiniKit that I ordered from the UK. Not only did it include the groovy Texturas ingredients, but also the tools and guidebook that I needed to really jump into this brave new world. 

Eines (Tools), elBulli Texturas Kit, MyLastBite.comThe tools that came with the elBulli Texturas kit included a collecting (straining) spoon, measuring spoons and a syringe. I have to say, there is something sort of thrilling about using tools with “Albert Y Ferran Adrià” ENGRAVED on them. It’s silly, but it makes the experience a little more special.

The phrase “Molecular Gastronomy ” (or molecular cooking) used to scare me. It sounded like brainy “science fiction” gibberish, especially when I started reading about techniques called “spherification” and “emulsification”. 

My current obsession with it began after I attended a “Molecular Gastronomy” class in November. The next day I started ordering the special ingredients and tools, then created a “molecular cooking” corner in my funky, vintage kitchen. During that first class, our instructor (the awesome Chef Michael Young) demonstrated how to make Ferran Adria’s fruit caviar, but I didn’t actually get to try the caviar recipe that day.

A couple of years ago, I remember being dumbfounded while watching Ferran and Albert Adrià working at their elBulliTaller (laboratory) in Barcelona, Spain. It was on Anthony Bourdain’s “No Reservations” episode titled “Decoding Ferran Adrià“. The brothers Adrià were showing Bourdain how to make mango “caviar” and I thought, “I wish I could do THAT in my kitchen!”.

Fruit "Caviar", MyLastBite.comWell I’m very proud to say that yesterday… I did it. I spent all afternoon making various sizes of elBulli “caviar”. It was AWESOME.

What I’ve discovered thus far is that “molecular cooking” requires three SIMPLE things:

1. Special ingredients such as Sodium Alginate and Calcium Chloride…

2. Tools including a digital scale, squeeze bottle and straining spoon…

3. And most of all… ENTHUSIASM!

Recipe for Ruby Red Grapefruit “Caviar” (I picked Ruby Red Grapefruit for the color… such a pretty pale pink!)

Making Fruit "Caviar", MyLastBite.com9 oz. Ruby Red Grapefruit Juice
18 oz. Cold Water
1 g Sodium Alginate (or Algin)
3 g Calcium Chloride (or Calcic)
Digital scale
1 large bowl
2 medium bowls
Immersion blender
Fine mesh strainer

1. In one of the medium bowls, fill with cold water until the bottom is covered up to about four inches. Set this water bath aside. It will be used as the final step in making the fruit caviar.

2. In the large bowl, mix the sodium alginate with 1/2 the fruit juice and blend till completely dissolved.
Making Fruit "Caviar",

3. Mix in the remaining fruit juice
Making Fruit "Caviar",

4. Strain into empty medium bowl and allow to sit to remove any air bubbles. 
Making Fruit "Caviar",

 5. In a medium bowl, dissolve the calcium chloride in the 18 oz. of cold water. I used a small whisk and it took about a minute to be completely dissolved.

Making Fruit "Caviar",

6. Fill syringe or squeeze bottle with the juice mixture. It will be a little thick and “goopy”.
Making Fruit "Caviar",

 7. Gently discharge the mixture into the calcium chloride bath drop by drop.

Fruit "Caviar",
8. After a minute, gently remove the “caviar” using a straining spoon and add to the cold water bath.

Tiny Fruit "Caviar",

9. Wait a couple of minutes then remove the “caviar” from the fresh water into a serving bowl or serving spoon.

Fruit "Caviar",

Note: I had a kitchen towel folded next to the water bath. Right after removing a spoonful of caviar (with the straining or collecting spoon), I gently tapped the bottom of the spoon onto the towel and it removed the excess water.

10. Serve and enjoy!
Fruit "Caviar",

My Trio of Sizes.
Fruit "Caviar",

Fruit "Caviar", Fruit "Caviar", Spherification, Fruit "Caviar",

I see Ferran Adrià’s  “Liquid Olives” in the very near future!!!

Previous Posts: 


“Adventures in Molecular Cooking [1]”

“Adventures in Molecular Cooking [2]”

About Molecular Gastronomy:

Video of Hervé This discussing Molecular Gastronomy

Books: Molecular Gastronomy by Hervé This and Malcolm DeBevoise

Where to buy ingredients:
Le Sanctuaire

Texturas elBulli

elBulli Texturas Mini Kit,

Infusions LTD sells an elBulli “mini starter kit”

Books about Molecular Cooking:

Under Pressure: Cooking Sous-Vide by Thomas Keller

On Food and Cooking: The Science and Lore of the Kitchen by Harold McGee

A Day at el Bulli by Ferran Adria

Alinea by Grant Achatz

Kitchen Chemistry by Ted Lister and Heston Blumenthal

The Big Fat Duck Cookbook by Heston Blumenthal


Ferran Adrià’s team demonstrates how to make fruit caviar


Ferran Adria’s Pea Ravioli


Molecular Gastronomy & Molecular Cooking  on TV:

Be sure to look out for a terrific molecular cooking episode of “Gourmet’s Diary of a Foodie” titled “The Inventors” (the series is currently in reruns). It features Herve This, PolyScience inventor Philip Preston (Anti-Griddle and Immersion Circulators) and Nathan Myhrvold, a former CTO of Microsoft turned Sous-Vide master.  Short video clip here.

José Andrés Made in Spain. If you missed it the yogurt spherification episode, it’s titled “Paella Day”

Read more about Spherification here

A recent Time Magazine article about Ferran Adria

Very excited to meet Ferran Adria!




Filed under Food Stories (written by me), Molecular Cooking, Recipes

37 responses to “Fruit “Caviar” – Adventures in Molecular Cooking [3]

  1. It’s a thing of beauty. Well done, Jo. Awesome pictures too. 🙂

  2. gambler72

    Awesome JO… I NEED to order my kit ASAP!!!!!!!!

  3. Awesome, blog. our company is launching a series of tools, products and instructional disc to assist other enthusiastic home cooks and up and coming chefs

  4. gambler72, Just an FYI. You really don’t need the actual elBulli Texturas kit to make the “caviar”. Basically if you have a squeeze bottle or meat “flavor injector” syringe, and an immersion hand mixer, all you would need is the Calcium Chloride and Alginate. It’s available here (click on search to find the products). Happy New Year!

  5. This looks like so much fun! I’m definitely interested in getting some of these chemicals to play around with.

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  7. Hi Martin, Thanks so much. I regularly read Khymos and am always inspired!

  8. Denise Iketani

    Hi Jo,
    Caught this blog entry because of your facebook pictures. Really fascinating. I love Ferran Adria and his brother. I may end up trying this myself. Hopefully we’ll be heading out to Catalunya this May. Although I won’t be able to eat at El Bulli I’ll be even closer to dream.
    I love your blog.
    Take care,

  9. Hi Jo I have added you to my blogroll! you do some nice things, but one tip for the caviar, it literally takes hours for the airbubbles from the blender to come out again, so I suggest you leave the juice oivernight in the fridge. the result will be crystal clear caviar! Atwork we use a vacuum packer to quickly extract the air.

  10. cosmopolitanblog,
    Thank you! And I will definitely try resting the solution so I can get the clear caviar. I know I have to be more patient! : )

  11. Jordan Lerman

    Hi im new to the whole molecular gastronomy thing, but i ordered in some of the chemicals needed and found this web site and decide to try their version of the grapefruit caviar first. I made sure to follow the recipe to the t but for some reason the grapefruit and alginate solution does not form in the calcium bath, instead it just disipates into nothing. And when i add more alginate to the point that the spheres do form the solution just gets to thick and the spheres are extremely week. I was just wondering if any one had any advise.

  12. Jordan,
    I’m still new to molecular cooking too but have a few questions. I will also forward your question to my molecular gastronomy instructor.

    1. Did you purchase “food grade” calcium chloride? I’m only asking because I made the mistake of buying it on Amazon and the calcium chloride I bought was for fish tank use! My instructor told me it had to be “food grade”.

    2. Did you allow the mixed sodium alginate and fruit juice to sit, so the bubbles would go away?

    3. Was your fruit juice 100%?

  13. Jordan Lerman

    thanks for the quick reply, I did make sure to by the ingredients food grade of line at le’piceri, i think that allowing the alginate mixture to sit my be one of the problems i will make sure to try it out next, and the fruit juice does say 100% on it. But how thick should the fruit and alginate mixture be? it always seems to be very gelatinized before i even drop it into the calcium bath, or else there is no reaction at all.
    Thanks again

  14. Hi Jordan,
    The few times I’ve made the fruit caviar, the liquid was still pretty runny… maybe a little thicker than honey.

    Another question:
    Are you using a digital scale to measure the alginate? I’ve made the mistake of forgetting to switch the conversion button before. So instead of one gram, I incorrectly weighed one ounce.

  15. Jordan Lerman

    i have been using digital scale I went back to check and it is set on grams. i tried again and they seems to be forming when i drop them in now with ratios you gave me but they dont seem to hold together when i try and take them out into the water bath. Oh and i had another question, should they sink or float when i drop them into the calcium bath?

  16. Hi Jordan,
    The caviar I made definitely float after coming in contact with the calcium chloride.

  17. Jordan Lerman

    So i am starting to think that whatever i do this whole fruit caviar thing is not going to work out. It seems that if i only use 1 g of the alginate nothing with form in the calcium bath, and if i use closer to 5g the spheres will form but they wont stay together when i try and take them out, instead they just flatten and break. I appreciate the help so far but if there are any other suggestions it would be greatly appreciated.

  18. Hi Jordan, When I hear back from my molecular gastronomy instructor I will let you know. He’s opening a new restaurant right now, so I know he’s been really busy.

  19. Jordan Lerman

    Thank you for the help i really appreciate it.

  20. Hi Jordan,
    My molecular gastronomy instructor replied and wrote:
    Hi Jo,

    Sorry for the delay… we are days out and lots to do…but I wanted to respond quickly.

    Grapefruit is tough when it comes to spherification. It has a very high acid level, second to lemon. This will inhibit the spherification from holding, essentially just dissolving the walls.
    Hope all is well.


    Jordan, Have you tried apple juice?

  21. Jordan Lerman

    No not yet but, i had something about using sodium citrate to raise the PH of the juice so ordered some, it should be in soon. But I will try apple juice next. Thank your professor for me, and thank you for your help. But one more question, do you maybe know anything about how much sodium citrate i might need to lower the acidity level to allow the spherification process?

  22. anselm hii

    Wow! Thanks for this. I am late to the spherification process but excited since reading your blog.

    How long and how do you store the caviar?

  23. JMP

    Lot’s of recipes and ideas (as well as products) for Molecular Gastronomy (“MG”) available at :
    You’ll even find products that European chefs are discovering (not industrial technologists, these products have been out about as long as the others – sometimes a few thousand years…) that are not in Texturas’s list : there is more to MG than one chef’s however innovative knowledge and know-how.

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  25. hey, I’d like to know if this can be done with strawberry, I’ve tried it but the mixture fell apart in the Calcium bath.

  26. Awesome! I’m just learning about the innovation of fruit caviar. I am definitely intrigued, and would love to try this in my kitchen someday.

    Thanks for sharing the step-by-step process of your experiment. I thoroughly enjoyed reading this entry.

  27. zzyxk

    Excellent guide! I JUST got my calcium chloride and sodium algimate. I will be using this recipe tomorrow!

  28. Lisa

    Can anyone tell me how long the caviar keeps for? Just wondering if its something I could make in the afternoon to take to a party?

  29. I am a Culinary Arts high school teacher and would love to teach this to my bakery & pastry class.

  30. Great Step by step process for molecular gastronomy. I love how you have made it look so easy for anyone to do it – Well Done

  31. Not needed

    Really cool !!! Loved it !

  32. caviar crazy

    There so pretty! 🙂

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