I originally stumbled (probably literally) upon this place when I lived in Chelsea. Now, this was a long time ago - B.S., as in Before Starbucks, but I guess we were still a little late to the game because in the back of my 1966 edition of the New York Times Cookbook, Porto Rico was listed as a recommended purveyor. They've actually been in business for more than 100 years!
A couple of things to know when ordering - there is always a weekly sale but the time to really stock up (if you have freezer room) is during one of their two BIG sales in either April or October. During these sales the volume of their business generally slows down the delivery schedule - it may take a week or more to receive your order. They also sell tea, coffee machines and some funky candy, including espresso bean confections. If you have a chance to visit the store there are some cool French presses, assorted creamers, and teapots also available. If it is your first time to the store and it seems familiar, perhaps you're recognizing it as one of the locations used to film one of those Healthy New York television commercial a number of years ago. There are four locations in Manhattan and one in Brooklyn, for you hipsters. Check it out - let me know what you think.