Mastering Reverse Spherification: How to Create Stunning Large Spheres with Sodium Alginate and Calcium Lactate

Reverse spherification is a fascinating culinary technique that allows chefs and food enthusiasts to create large, impressive spheres with a delicate gel-like membrane and a liquid core. In this blog post, we will guide you through the step-by-step process of making large spheres using sodium alginate and calcium lactate, providing precise measurements and ratios to ensure success. Additionally, we’ll share some inspiring ideas for dishes and recipes that showcase these remarkable culinary creations.

Preparation of Reverse Spherification

To begin, you will need the following ingredients and equipment:

  1. Sodium alginate solution: 0.5% to 1% sodium alginate dissolved in water
  2. Calcium lactate solution: 2% to 4% calcium lactate dissolved in your chosen liquid (e.g., juice, broth, or sauce)
  3. Sphere molds: Silicone molds with half-sphere cavities, large enough to create your desired sphere size
  4. A kitchen board or a stable, flat surface
  5. A fridge with enough space to accommodate the sphere molds

Step-by-Step Guide to Reverse Spherification

  1. Prepare the sodium alginate bath: Mix the sodium alginate solution by dissolving 0.5% to 1% sodium alginate in water. Allow it to rest for a few hours or overnight to remove any air bubbles and achieve a smooth consistency.

  2. Prepare the calcium lactate solution: Dissolve 2% to 4% calcium lactate in your chosen liquid, such as fruit juice, broth, or sauce. Ensure that the solution is well mixed and free of any lumps.

  3. Fill the sphere molds: Carefully pour the calcium lactate solution into the silicone sphere molds, filling each cavity to the top. Place the filled molds onto a kitchen board or another stable, flat surface, ensuring that the liquid remains level in each cavity.

  4. Refrigerate the molds: Transfer the filled molds to the refrigerator and allow the liquid to set for at least 2-4 hours. This waiting time will ensure that the calcium lactate solution forms a semi-solid state, which is necessary for successful reverse spherification.

  5. Prepare the spheres: Remove the semi-solid calcium lactate spheres from the molds and gently drop them into the sodium alginate bath. Allow the spheres to rest in the bath for 3-5 minutes, as the thin gel-like membrane forms around the liquid core.
Examples of Reverse Spherification
Sodium Alginate

Inspirational Ideas

Large spheres created through reverse spherification can elevate a variety of dishes, both savory and sweet. Here are some ideas to spark your culinary creativity:

  1. Create a burst of flavor in a salad by using spheres filled with a tangy vinaigrette or a creamy dressing.

  2. Add an unexpected twist to a seafood dish with spheres filled with a zesty citrus sauce or a savory broth.

  3. Enhance a dessert with spheres filled with fruit coulis, chocolate sauce, or a sweetened cream, providing a delightful surprise for your guests.


Reverse spherification is a captivating and versatile technique that enables you to create impressive large spheres with sodium alginate and calcium lactate. By following the precise steps, measurements, and ratios provided in this guide, you can confidently experiment with this technique and explore endless culinary possibilities.

Let your imagination run wild as you incorporate these stunning spheres into your dishes and recipes, showcasing your creativity and passion for modern gastronomy!

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