OAMC stands for Once-A-Month Cooking. It's also known as freezer cooking, bulk
cooking, or mega cooking. This doesn't necessarily have to be done once a month.
Many people cook once a week, or once every two months. Still others just double
the recipe each time they cook and freeze the second for later use, without having
any special cooking sessions.
OAMC is the process of cooking multiple meals in one cooking session, saving on
cleanup and making more efficient use of preparation time. There are many books
about OAMC: Once a Month Cooking, Dinner's in the Freezer, etc. The
one that I have, and use, and recommend, though, is
The Freezer Cooking Manual. It actually
provides the forms and help for you to devise your own plan, utilizing your
own recipes. It also includes a selection of recipes (which are actually
real foods that real people eat - even real kids!) and lots of helpful information,
such as freezing information and conversion charts. (I found that when I read the
others, they left me feeling dependent on using their plans exactly as written,
though they were full of recipes we just don't eat.) I also find their recipe
layout very easy to follow.
If you need help with your freezer cooking, Freezer Pleasers
offers some handy services, like consultations (to help you plan) and group
cooking sessions. They also have newsletters and articles with recipes and hints.