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Based on our initial research findings it may be concluded that whilst there is a difference in holding temperatures of different shaped hay-boxes the shape of the inner container of the hay-box did make a difference. The ovoid or convex bottomed inner containers took measurably less time to cool than cylindrical containers such as conventional saucepans or glass Pyrex casserole dishes.

• The initial results of the solar cooker trials show that fireless cooking can be used in a commercial catering setting when combined with hay-box insulation to retain heat
• Points to be considered when using recycled or indigenous insulation material in haybox construction, must remain unaffected by rot, insects, vermin, and humidity to conform to EU and UK food safety legislation.
• The haybox or fireless cooker should be easy to clean, simple to handle and easy and convenient to store.
• The use of haybox or fireless cooker is not only an environmental bonus but chefs will spend less time working over a stove and be exposed to less smoke and noxious gasses.
• It is also a way of helping to preserve renewable and non-renewable energy sources.

There is a need to identify, test, disseminate and popularise such measures that are not only cheap, easily available and energy efficient but are user-friendly. If popularised among the masses the combination of solar and hay-box cooking can be an asset to the catering industry. It is essential that academics look for innovative culinary processes with energy saving imperatives.

As chefs look to manage their time and energy more efficiently, old methods reinvented with a new outlook can provide solutions. It should be noted that the pleasure of a hot meal is often beyond the imagination of many families around the world. Many homemakers would like the opportunity to access low cost fireless cookery, therefore a combination of solar and hay-box cooking may in part give low or no cost solutions. Designs of hay, cardboard, strawboard need to be evaluated and tested for their efficacy in cooking and for keeping the food hot within safe temperatures.