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Military Cookery Manuscript, the London School of Cookery, September 30-November 9, 1940

Page 22

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To reasemble the Hydra. First of all is the jet, the jet screw, then the 4 wing nuts. Screw up until you feel the pressure. The safety method of lighting. Fill up the tank 2/3 of petrol (12 pints). Connect pump. Open air in the valve pump to 20 Lbs. Close air in the valve and disconnect pump. Flood small indent under burner. Firmly close air release valve and light. When you hear continuous roar vaporization has taken place. Fully open air release valve and pump to 45. To shut Hydra close petrol release valve and when the flame has died away release air. The Hydra Petrol Burner. Nos. /1/ Cooks for 120 men. Has a 2 gall tank in which you put
 
Szathmary Culinary Manuscripts and Cookbooks