Volcano Cake

a birthday adventure

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Birthday celebrations are part of Pam’s special relationship with those of our twelve grandchildren who live close by.  Preparations begin with design discussions months before the event, commonly around a sibling’s earlier birthday.  Daryoush is fascinated by dinosaurs, exotic animals and….volcanoes, “Make me a volcano cake, grandmother”, he told Pam just after his fifth birthday one year ago.

We started design discussions and experimentation late September 2017 for Daryoush’s late November sixth birthday party.  Years ago, for grandson Taj, we did a Galapagos cake with a volcano powered by “pop rocks.”  It gave us a powerful, boiling eruption.  Pam called around and found it available, brought home a few packs and “pop rocks” flopped.  The formulation was changed and now fizzles.  Pam also came up empty for Galapagos themed figures, “Rain Forest” is now the thing.

On the day of his party, Daryoush’s father dropped him off three hours before the event to be part of his cake’s creation.  We started with opening his Rain Forest themed presents.

Click on an image to enlarge.

There were three wrapped gifts in jungle themed paper:

  • Palm Trees
  • Rain Forest animal figures
  • A Rain Forest book.  Luckily, many of the animal figures were featured in the book we had fun making the matches.

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Daryoush organized his materials, the trees, animals, candy sharks, chocolate candy coated rocks.  He sorted the rocks into red/orange/yellow flaming boulders and the simply delicious ones.  He sampled quite a few after we washed his hands and rewashed after putting fingers in his mouth, not more than 25% of the time, enough to make the point.

Just off frame, to the right, are a yellow sheet cake, to support the rain forest tableau, and the Rice Krispy treat volcano cone.

Daryoush wore an apron, just like GMa.

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Pam settled on her standby Rice Krispy treat recipe, from the box, for the volcano cone structure wrapped around two equally sized tall plastic tumblers one inside the other to form the volcanic chamber where the magic happens.  We used two green tumblers at hand, red is a better color.

Pam favors a “killer” chocolate, mocha butter cream icing.  To start she applied it with a pastry bag and smallish star tip, forming the volcano surface.  The effect was not quite right and took too much time.  She then regrouped with the largest star tip and formed parallel strips, top to bottom, with empty triangles along the bottom margin.  The triangles were then filled in with strips.

The effect is similar to the “Devils Tower” model Roy Neary made from mashed potatoes in “Close Encounters of the Third Kind.”

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Next came dramatic red and yellow lava streams.  Pam used white chocolate “melting” discs, melting them in the microwave in 30 second bursts, stirring in between.  It took three rounds for a smooth melt.  Daryoush participated with a toothpick to make finished touches to enhance a realistic effect.  He had a habit of popping the stick in his mouth, each time I supplied him with a fresh toothpick.

One mistake we made was to tweak the melted white chocolate with food coloring.  We had orange discs, intending to make a more red we added the color.  Immediately, the melt consistency congealed into a mass.  We recovered by forming orange lava bombs for the base.

A long time favorite material for Pam are “brownie bits.”  Here Daryoush is crumbling the cakes and applying volcanic ash to the base.  The whole brownies made perfect boulders for the Rain Forest tableau.

Our cake modeled the Arenal Volcano of Costa Rica with that country’s Lake Arenal and rain forest.  To form the lake Pam outlined the form in blue buttercream icing, covered with dark blue cake decorating gel.  Here is Daryoush applying the gel.  Using a spatula, Pam formed the glistening water effect by artfully spreading the gel.

Pam finished the tableau base with green and white buttercream frosting, the white coated with a mixture of brown and palm sugars to simulate earth/sand.

Daryoush’s imagination flourished when he applied his figures and candy.  Sharks populate the fresh water lake, animals wander the rain forest.  Boulders and rock abound.

Pam also made a set of chocolate gluten free cupcakes with chocolate mocha buttercream icing.  Daryoush decorated each cupcake with a large “cherry” and smaller multicolored sprinkles.  You can see the cupcakes in the birthday party shots.

For these photographs I used a Canon EOS1 Mark  III camera body fitted with the 50mm EF 1:1.2 L USM lens, and 600EX-RT Speedlite flash.  Here I tamped the f-stop down to 1.2 for the beautiful bokh possible with this lens.  Most shots were at f5.6 to keep the shooting simple.

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The effect of Daryoush arriving to greet his assembled friends with a volcano was electic. What fun. Here is the group wishing their friend a happy birthday.

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Pam came up with the magic volcano eruption by visiting the business of my former coworker, Bruce Lane’s Purity Ice Cream. Bruce graciously demonstrated to Pam how to make the effect using dry ice and hot water.  I purchased two pounds of dry ice an hour before the party, transported it in a cooler and open car windows to the party and kept it in the car until just before the cake cutting/birthday song.  For the cake we only needed a handful of dry ice and some water. You can see the effect and reactions of children in the photos.

Later, Pam and I experimented with the full drama possible using the leftover dry ice and boiling water. This will NOT work for small children and an enclosed space, since dry ice is frozen carbon dioxide that sublimates to the gaseous form. The small quantity used for the party amazed the children.

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28 thoughts on “Volcano Cake

  1. Yes, that was very impressive! Your grandchildren are really lucky! Not just the obvious talent but the thought that went into it, and including the little guy in its creation!

    Liked by 1 person

  2. I loved reading this post and seeing the pictures! My mother delighted in making special birthday cakes for me and later for her grandchildren; however, she never got into pyrotechnics like Pam did. I’m impressed! What great memories for all the children (and adults) at Daryoush’s party!

    Liked by 1 person

  3. This was a beautiful set of cakes and your can tell your grandson absolutely loved being with your wife making it together. Thanks for sharing the beauty of the volcano and island cakes. Your grandson looks like a smart, sweet and lovable boy!

    Liked by 1 person

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