Food heating technique for producing high temperature

A food heating technique for producing a high temperature in a container of food, comprising the steps of:

• providing a receiving tank in the container having a heater lid that comprises a pressing pin located at the midpoint thereof, a protruding piercing body surrounding said pin, said piercing body provided with a plurality of bending grooves;
• providing quicklime in the receiving tank;
• providing a first pack in the receiving tank, said first pack for producing a medium temperature heating and comprising a covering layer of plastic film and a first liquid mixture, said first liquid mixture that includes about 0.03 g NaCl(s), about 0.8 cc CH.sub.3 COOH(1), and about 8 cc H.sub.2 O(1);
• providing a second pack in the receiving tank, said second pack for producing a high temperature and comprising a covering layer of plastic film having a melting point of about 140.degree. C. and a second liquid mixture that includes about 0.02 cc NaCl(aq), about 0.8 cc CH.sub.3 COOH(1), and about 9 cc H.sub.2 O;
• piercing said medium temperature heating pack with said pressing pin and protruding piercing body such that said temperature raising liquid therein can rapidly mix with said quicklime;
• and
• creating a chemical reaction such that the temperature increases to about 250.degree. C., thereby heating the contents of the container to reduce any residual bacteria.