My understanding is that they have stopped producing it. I thought I had read where the company was bought out and the decision was made to stop producing Southdown, this was back in January.
For me it's become almost a phantom. I heard rumor there was some in Rochester, MN so I called and confirmed. Drove over the next morning and was told the night guy decided to ship it out to Minneapolis. Made him check the computer and got the address. Drove to Minneapolis store and they split the order and some "fish freaks" bought their half of the order already. Same thing at the other store.
It's been frustrating. Anyone know for sure if they are still producing it? If you're in Houston and know of the parent company, you might want to make a call...