InMandatory Palestine, demand for kosher canned meats increased as Spam became more popular during World War II. Canned meat was briefly mentioned during wartime from 1939–43, but the true boom in kosher canned meat came in 1945. This is when kosher canned meat became the key item in Europe's Jewish war victim relief packages. Then in 1946, theChicago Kosher Sausage Manufacturing Companyregistered a patent for a kosher canned meat product calledBreef. Made of beef, Breef has a similar texture to Spam but tastes like corned beef.Also, akoshervariant of Spam, known asLoof(Hebrew:לוףu200e, a Hebrew linguistic play onmeatloaf), was produced by Richard Levi, and mostly used as part offield rationsby theIsrael Defense Forces. AGlatt kosherversion was also produced. It was phased out of field rations during the early 2000s and was finally removed from rations when production ceased in 2009.
