Erewhon Natural Foods Market has an great selection of all kinds of healthy food to stock your kitchen. It is also a "one-stop source for macrobiotic staples." They feature excellent brands of miso (over 30 varieties), seaweed, soy sauce, umeboshi plum products, teas and Japanese foods. They even have a macrobiotic consultant available to provide you with recipes and advice and on site cooking classes. You can even check out their website for more free recipes.
If you are already feeling hungry when you get there, you can check out their full service deli, salad and soup, sushi bar, and another prepared foods section.