
Start by placing the eggshells in a large skillet over medium to low heat with boiling water and cook them for at least 15 minutes.
After this time has passed, transfer them to a cutting board and dry them thoroughly with the help of paper towels.
Next, transfer everything to a large nonstick baking tray.
Place it in a preheated oven at 200° C (400° F) and bake for 20 minutes.
After this time has passed and once the shells are nicely toasted, transfer them all to a food processor or blender, breaking them into smaller pieces and blend everything until crumbly.
This eggshell seasoning powder is rich in calcium and minerals.
It can be added to soups, sauces, bread, pasta, or even sprinkled over salads, bringing extra flavor and health benefits.
If you prefer, you can leave them coarser or grind them into a fine powder.
Next, transfer it to a spice jar.
Serve.