I use to spend most of my Saturdays shopping for groceries. I was so tired when I got back home that I did not even want to take the groceries into the house. So, I came up with a plan that drastically cut much of my shopping time, by at least 60%. EUREKA!!!
First, I never leave home without a shopping list. I first look through my pantry to see what I am lacking.
Next, I research all of my local grocery circulars to locate the best sale on those items. Then on a piece of paper, I put the store names on top (no more than three or four) and proceed to write down what I need from each store.