NOVELTY - The digestion basket comprises an access lid (52), four sides, a base, an open top, a mesh structure built into or onto the base to create air pockets under and within the compost pile when in use, and a wire mesh barrier that is installed around the digestion basket in the ground. The cuboid basket is installed below ground, forms a base for an above ground solar chamber, and is provided in a flatpack condition. The solar chamber is double-walled. The sides have a length of 0.55 m, and a depth of 0.4m. The base is 0.55 m square. The sides and base are made from wire mesh.    USE - The digestion basket is useful for a food waste composter useful in a composting system (all claimed).    ADVANTAGE - The economic digestion basket exhibits increased volume to provide a greater throughput for large multi-occupancy households, groups of households and small institutions and commercial premises with a suitable enclosed outdoor space and increased basket surface area to volume ratio for improved aeration and performance, ensures simpler installation of both a single unit and clusters of units, prevents dispersion and eliminates odors.    DETAILED DESCRIPTION - The digestion basket comprises an access lid (52), four sides, a base, an open top, a mesh structure built into or onto the base to create air pockets under and within the compost pile when in use, and a wire mesh barrier that is installed around the digestion basket in the ground. The cuboid basket is installed below ground, forms a base for an above ground solar chamber, and is provided in a flatpack condition. The solar chamber is double-walled. The sides have a length of 0.55 m, and a depth of 0.4m. The base is 0.55 m square. The sides and base are made from wire mesh and connected together, in use, using eight angle iron brackets. A connection mechanism for connecting the basket to the above ground solar chamber comprises four corner brackets, where each bracket comprises mesh attachment lugs for connecting the brackets to the basket. The basket is made of sheets of wire mesh. The connection mechanism further comprises: a sloping surface incorporated into the corner brackets, where each slope extends from a mid-edge of each side to each corner; and boltless clips for clipping the upper inner and upper outer chambers to the basket or to brackets at the top of the basket. An odor barrier is incorporated around the upper portion, or half, of the basket, and lines the inside of the upper portion of the basket. INDEPENDENT CLAIMS are included for:    (1) a block of food waste composters; and    (2) a composting system.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a free draining household composter with a leachate treatment system.    Tray (36)    Annular reservoir (40)    Hydrophilic matting (42)    Lid (52)    Debris catch plate. (60)