Why greases must be saved. A soldier of the home front--and there's one in every American kitchen--saves all waste fats and greases so that they can be processed into ammunition for America's soldiers on the battlefronts. Pan and broiler drippings, deep fats, renderings from bacon rinds, these are some of the fats which should be put through a strainer to remove meat scraps and other solids, and poured into wide-mouthed cans such as coffee or fat cans