If you have an out-of-the-way corner of your garden, buy a piece of rhubarb root, stick it in the ground, fertilize it once a year, and water it once a week. You will be rewarded with a spring and summer supply every year.
If you can keep a food longer than a week in your refrigerator, it could be high in salt. Instead, buy fresh foods and develop the flavor with fresh herbs and spices rather than salt.