I (Wendy) wish we had industrial size everything, but we don’t. We have a standard stove and a modest sized kitchen. We do have extra large novelty items like a 20-qt. soup kettle, an electric roaster that can easily fit a 20-lb turkey, a Kitchen Aid, two refrigerators and a 15-cubic foot chest freezer.
Chris and I used to do Once a Month Cooking. We did it for 7 years straight, but lost interest when we moved to Colorado (no particular reason why; we still highly recommend it). Even so, we frequently cook several servings at once and freeze the extra. This cuts down on the need to cook afresh everyday. It also disciplines me and helps keep my shopping costs down.
I have three meals that I almost always cook during the week: tacos, soup and sandwiches. This knocks out nearly half the week, they are inexpensive meals, and I can always count on them. The other four days I (or more often my oldest daughter at home, Cynthia) can be a little more creative. Nevertheless, whatever we eat, cost efficiency is always our top goal.
My first cookbook goes into detail on money-saving tips for any family, no matter how large or small. People think families like mine eat beans and rice only, but we eat like kings. Really, there is nothing that should get in the way of providing for your family.