(a) How and when should jars be closed in the cold-pack method?
They are the "open-kettle," the "intermittent," the "cold-water" and the "cold-pack" methods.
For this "cold-pack" method you can use whatever equipment you have in the kitchen.
Blanching is what makes for success in the cold-pack method of canning.
For the salad here shown, tomatoes and beans canned by the cold-pack method were used.
A number of such devices are manufactured for canning by the cold-pack method, but it is possible to improvise one in the home.
Such a combination may be canned safely by either the open-kettle or the cold-pack method.
Mix the two foods in any desirable proportion and, for the cold-pack canning method, put the food into the jars.
(a) How should foods be packed in jars in the cold-pack canning method?
It is used rather extensively in the South, where they say the conditions do not favor "cold-pack."