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How to Compost Kitchen Scraps
Kitchen composting transforms your vegetable peels, coffee grounds, and eggshells into rich soil through controlled decomposition. You need browns (dry materials like leaves), greens (wet scraps like fruit peels), proper moisture, and regular turning. In 3-6 months, you'll have dark, crumbly compost that smells like earth.
- Total time: 3-6 months
- Difficulty: Easy
Ingredients
- equal parts greens (vegetable scraps, fruit peels, coffee grounds, tea bags, eggshells)
- equal parts browns (dry leaves, shredded newspaper, cardboard, paper towels)
Step by step
- Choose your composting method. Outdoor bin for yards, tumbler for easy turning, or countertop composter for apartments. Each works, but outdoor bins handle the most volume.
- Collect your greens. Save vegetable scraps, fruit peels, coffee grounds, tea bags, and eggshells. Keep them in a covered container in your kitchen until you're ready to add them to your pile.
- Gather brown materials. Collect dry leaves, shredded newspaper, cardboard, or paper towels. You need roughly equal parts browns and greens by volume.
- Layer your materials. Start with browns on the bottom for drainage. Add greens, then browns, like making lasagna. Each layer should be 2-4 inches thick.
- Maintain moisture. Your pile should feel like a wrung-out sponge. Add water if it's too dry, browns if it's too wet. Properly moist compost steams slightly on cool mornings.
- Turn regularly. Mix your pile every 2-3 weeks with a pitchfork or shovel. This adds oxygen and speeds decomposition. The center should feel warm after turning.
- Harvest finished compost. After 3-6 months, the bottom will be dark and crumbly with no recognizable scraps. Sift out any large pieces and use the rest in your garden.
Tips & troubleshooting
- Chop large scraps into smaller pieces to speed decomposition
- Keep a small freezer bag for scraps if you don't generate enough daily volume
- Add crushed eggshells slowly - too many at once won't break down
- If your pile smells bad, it needs more browns and less water
- Coffee filters and tea bags are compostable, but remove staples first
- Avoid meat, dairy, oils, and pet waste in basic home composting
Variations
- Vermicomposting. Use red worms in a bin to break down scraps faster. Perfect for apartments and produces liquid fertilizer as a bonus.
- Bokashi composting. Ferment scraps in a sealed bucket with special bran. You can compost meat and dairy this way, though it requires burial afterward.
- Cold composting. Simply pile materials and let time do the work. Takes 6-12 months but requires no turning or maintenance.
Questions
- What kitchen scraps can I compost?
- Vegetable and fruit peels, cores, coffee grounds, tea leaves, eggshells, and paper towels used for food cleanup. Avoid meat, dairy, oils, and anything processed or salted.
- How do I keep my compost from attracting pests?
- Bury fresh scraps under browns, avoid meat and sweet fruits on top, and keep your pile properly moist but not soggy. A well-managed pile rarely has pest issues.
- Can I compost citrus peels and onion scraps?
- Yes, but use them sparingly. Large amounts can slow decomposition or create acidic conditions. Chop them small and balance with other materials.
- How do I know when my compost is ready?
- It looks like dark, crumbly soil and smells earthy, not sour or rotten. You shouldn't recognize individual scraps anymore, and it should feel cool to the touch.
- What if I don't have yard space for composting?
- Try countertop electric composters, under-sink worm bins, or bokashi fermentation buckets. Many cities also offer compost pickup programs for food scraps.