Mature compost is made from completely decomposed organic waste.

Basic recipe:
- 50% plant remains (dry leaves, peels, crushed prunings)
- 30% kitchen scraps (fruits, vegetables, egg shells)
- 20% manure (optional, to enrich)
- Water (to maintain humidity like a wrung sponge)

Steps:
1. Mix all ingredients in a composter or aerated pile.
2. Turn once a week to oxygenate.
3. Maintain constant humidity.
4. The compost will be ready in 3 to 6 months when it has a dark color, an earthy smell, and a homogeneous texture.