The problem is that not all grocery stores carry the same items. So you've got to come up with a system that keeps track of which store carries which items. And you've got to note the sodium content in case you need to make comparisons.
I realize that I'm pretty fortunate living here in Northern California near Sacramento. I've got three local supermarkets I shop at regularly: Raley's/Bel Air (a Northern California chain); Safeway, & Save-Mart. In addition, there's a Trader Joe's along with a Whole Foods relatively close by along with a Nugget Market (a smaller Sacramento area high-end chain) and it's sister store, ForkLift. And, of course, I'm a card carrying Costco member.
I found great low sodium products at so many different stores and from online sources that I knew I had to do something to keep track of them. So I gathered all my information and entered it into a Microsoft Word table. I could have put it in database form. Or just jotted everything down in a spiral notebook. The method I chose was not as important as just getting the information all together in one place so I could refer to it as needed.
I included the following information: the product description; the brand name; the serving size amount; the sodium content per serving size; where to purchase the product; and any special bits of information that would be helpful.
As I bring home new products, I add them to my list. About twice a year I review my information by printing out my list and taking it with me to the stores. I re-visit every item to see if there are changes. For instance, today I reviewed the products from Raley's/Bel Air and discovered that they no longer carry Saffola Unsalted Margerine. Instead they are carrying Smart Balance 50/50 Butter Blend Unsalted Sticks.
Keeping track of low sodium products is especially helpful when I am running low on something and need to get some more. If I can't exactly remember where I purchased it, my list helps me out. My list is very personalized. I only note the low sodium products that I have found tasty & useful. For example, although all my local grocery stores carry Mrs. Dash marinades, since I don't like them that much, I haven't recorded them.
Keeping track of favorite products helps make the challenge of low sodium cooking just a little bit easier.
Just this last year my husband, a computer programmer, created a nifty database program specifically for grocery shopping. It includes a list of items I regularly purchase linked to the stores that carry them. I can add or delete products easily and do the same with store links. Here's an example:
|Specialized Grocery Store Products Data Base|