I find it really pays off making things for myself.
For example, todays early lunch: Chicken, Vegetable and Noodle soup (made from homemade chicken stock, leftover chicken and vegetables and a handful of noodles) and homemade bread.
Assembly time - 10 mins
Salt - almost 0
Taxes included in food - $0.05 (no sales tax only employment taxes on production of raw ingredients)
Time spent on weekend making stock (outside of boiling the stock) - 1/2 hour
Time spent on weekend making bread (outside of baking time) - 15 mins