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Updated on December 8, 2021 by · This post may contain affiliate links ·

How to Pour Geode Crystal Molds

Skill level: Newb

Learn how to pour isomalt into silicone molds. Please be very careful with melted isomalt, as it will be extremely hot. Wear protective eyewear and gloves.

4:05 Minutes of Instruction

What You Will Learn

  • How to melt and pour isomalt into silicone molds
  • How to color isomalt

Tutorial Directions

  1. Melt isomalt crystals in a silicone container. Microwave on high for 15 second intervals until completely melted.
  2. Wait for isomalt bubbles to disperse. This reduces the bubbles in the finished piece.
  3. Secure your silicone mold by wrapping a rubber band around the 2 parts of the mold two times. Be sure to check that the mold lines up correctly and there are no gaps.
  4. Slowly pour isomalt into mold, starting in the middle of the mold. Pour a thin ribbon of isomalt into the mold to avoid any air bubbles forming.
  5. Gently tap mold on hard surface to cause any bubbles in the isomalt to rise to the top and escape.
  6. Let isomalt fully cool until set.
  7. Gently test middle of isomalt to see if set, only test after waiting several hours.
  8. Gently remove rubber band.
  9. Slide mold off, 1 part at a time. Carefully slide "up and down" not "side to side"
    or isomalt will break.
  10. Isomalt will be cloudy; don't worry this is normal.
  11. Heat a paring knife with cremé brule torch. Be careful not to burn your hands.
  12. Knife may become discolored. Usually this is just leftover isomalt and can be cleaned off.
  13. Slide knife on edge of isomalt crystals. This will bring back the shine of the isomalt.
  14. Clean knife after every use. Wipe knife on damp paper towel to remove isomalt, then reheat.
  15. Keep going until every crystal edge is shiny.
  16. Optional Method: Adding Color
  17. Add powdered food color to melted isomalt. Be sure to use a silicone mixing tool.
  18. Highlighters mixed with everclear work well for edges. Experiment with colors for different effects.
  19. Seal finished pieces with PME clear glaze spray.
  20. Purchase the whole Sugar Geek Show crystal mold line, available now at simicakes.com

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About Liz Marek

Liz Marek is a professional cake artist, sweet and savory recipe developer, and the founder of Sugar Geek Show, where she teaches cooking, baking and cake decorating through detailed tutorials, food science explanations, and kitchen-tested recipes. She has been creating recipes and teaching baking techniques since 2008, helping bakers of all skill levels gain the confidence to make professional-quality desserts at home.

Liz is known for breaking down complex cooking and baking concepts into simple, approachable methods. Her work focuses on helping people understand not just how a recipe works, but why it works. Through Sugar Geek Show, she shares step-by-step recipes, cake decorating tutorials, and practical baking guides designed to make professional techniques accessible to everyone.

Over the years, Liz has taught thousands of students through online tutorials, classes, and educational content focused on real kitchen results. Her recipes are carefully tested and written to help people succeed the first time they make them.

When she’s not developing recipes or teaching baking techniques, Liz also hosts curated travel experiences for women through her travel brand Soul Sisters.

You can find Liz’s latest recipes, baking tutorials, and food science tips at Sugar Geek Show.