TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Device: The solar cooking apparatus has a stand, where the a solar cooking apparatus frame can tilt from 0 degrees up to 90 degrees and rotate 360 degrees to place the one or more solar ovens arranged in a fixed and parallel manner in a position to optimally capture solar radiation. The solar cooking apparatus comprises two or more ovens arranged in a fixed and parallel manner within a solar cooking apparatus frame; or three or more ovens arranged in a fixed and parallel manner within a solar cooking apparatus frame; or four or more ovens arranged in a fixed and parallel manner within a solar cooking apparatus frame. The solar collection element is an evacuated tube-in-tube comprising an inner tube having an inner tube diameter, an inner tube length, an inner tube open end, an inner tube closed end, an interior surface enclosing an interior space, and an exterior surface, the interior and exterior surfaces extending the inner tube length, where the exterior surface comprises an anti-reflection layer, an absorbance layer, and an infrared-reflection layer; and the outer tube having an outer tube diameter, an outer tube length, an outer tube open end, and an outer tube closed end, where the outer tube diameter and the outer tube length are both greater than the inner tube diameter and the inner tube length, where the inner tube is fixed inside of the outer tube and sealed between the inner open end and outer tube open end to form a hollow space extending the length of the exterior tube under vacuum pressure between the exterior wall of the inner tube and the outer tube. Solar collection element is comprised of borosilicate glass or Vycor glass. It is enclosable with a cap element that is attached at the inner tube open end to withstand cooking pressure in the interior space. The first solar reflector and/or the second solar reflector comprise at least one of anodized aluminum, stainless steel, chrome, mylar, silver film, plastic film or metallic paint. The solar cooking also comprises a cooking implement that fits within the inner tube, having a length less than or equal to the inner tube length; and an attachable cleaning implement to loosen or remove residual waste from a solar cooking apparatus. The cooking implement comprises a first implement end; a second implement end; an implement length less than or equal in length to the inner tube length; a trough having a length less than the cooking implement length; and a diameter less than the inner tube diameter, where the first implement end is closed and insertable into the inner tube open end, the second implement end is fashioned with a heat-resistant cooking implement handle. It is enclosable and watertight having a pressure outlet. The cooking implement has a concave cooking surface extending between the first implement end and the second implement end, the concave cooking surface being accessible when the cooking implement is outside of the solar cooking apparatus. Preferred Parameter: The concave cooking implement has a concave cooking surface between 40% and 70% round.