Eggshells

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Eggshells: From Kitchen Scraps to Homestead Gold

If you're like me, cooking 98% of your meals from scratch on the homestead, you go through a lot of eggs. Whether they're scrambled for breakfast, baked into a cake, or whipped into mayo, the eggshells often pile up fast. But did you know these humble kitchen scraps are a hidden treasure for your home, garden, and even your health?

Before reusing eggshells in your home or garden, sterilizing them is essential. Raw eggs can carry bacteria like salmonella, and any remaining membrane or moisture can attract mold or pests—especially if you’re using them in seed starting, chicken feed, or DIY skincare.

How to Sterilize Eggshells in the Oven

What You’ll Need:

• A collection of rinsed eggshells (remove any egg white or yolk residue)
• A baking sheet
• Parchment Paper
• An oven set to 200°F (93°C)

Instructions:

1. Rinse your eggshells thoroughly with warm water. Let them air dry or pat them dry with a towel.
2. Using parchment paper underneath, spread the shells out on a baking sheet in a single layer.
3. Bake at 200°F for 20 minutes. This low, slow heat dries the shells completely and kills any lingering bacteria.
4. Once cooled, they’re ready to be crushed, powdered, or used whole—depending on your project!

Tip: You can save shells in a bowl or container throughout the week and do one large batch at a time.

10 Practical Ways to Use Eggshells

1. Garden Fertilizer

Crush sterilized eggshells and sprinkle them directly into your garden beds or compost. They add calcium and trace minerals that help prevent blossom end rot in tomatoes, peppers, and squash.

2. Seed Starting Pots

Start seeds in half eggshells! Fill with seed-starting mix, plant your seed, and when it’s time to transplant—just crush the bottom slightly and plant the whole thing.

3. Pest Deterrent

Scatter crushed shells around your plants to deter slugs, snails, and even some soft-bodied caterpillars. The sharp edges irritate them and keep them at bay.

4. Chicken Feed Supplement

Bake and crush the shells into small pieces (but not too powdery) and mix them back into your hens' feed as a calcium boost to support strong eggshell production.

5. Add to Bone Broth

Toss a few sterilized shells into your simmering bone broth for added calcium and minerals. Just make sure they’re crushed and cleaned well first.

6. Eggshell Powder Supplement

Grind sterilized shells into a fine powder using a clean coffee grinder or blender. A teaspoon contains about 800–1,000 mg of calcium. Add to smoothies or homemade capsules if you’re seeking natural supplementation (always consult a health practitioner first).

7. Compost Accelerator

Eggshells help balance acidity in compost piles and add valuable minerals to the mix. Crush before adding to speed up decomposition.

8. Household Abrasive Cleaner

Mix finely crushed shells with a bit of baking soda and castile soap to scrub tough pans or sinks—perfect for cleaning without harsh chemicals.

9. Skin Soothing Bath Soak

Grind sterilized shells and mix them with baking soda and lavender for a mineral-rich bath soak. Soothing and softening for the skin.

10. Craft Projects or Natural Dyeing

Use powdered shells to make textured paint for kids’ nature crafts or experiment with calcium in natural dye baths for fabric.

A Final Word

Eggshells are more than just food waste—they’re a nutrient-dense, resourceful byproduct of farm life. Finally, whether you’re nourishing your soil, your chickens, or your body, taking the time to sterilize your shells opens up a world of possibility.

So next time you crack an egg, don’t toss the shell—bake it at 200°F for 20 minutes and turn it into something useful. Waste not, want not!