Yes, eating at Baja Fresh is the first step. I like their grilled vegetarian burrito.
Well, okay, you don't *have* to eat at Baja Fresh. Anyway, their grilled vegetarian burrito does not come in an 8oz tub, so you'll have to buy their salsa or guacamole if you want this particular part. You'll probably find that your local deli sells cream cheese or chopped liver in a tub like this, and they probably have better matzo ball soup
than Baja Fresh, too.
The key thing is that you find a tub that has a flat lip along the top edge, and fits into the top of your cat food dispenser, resting on that lip, so that the lid of the dispenser will close over it.
You'll also need a cat food dispenser with a circular, flexible pop top that snaps down over the tub from Baja or your deli. This sounds like a bit of a chicken-and-egg problem, but I got it right on my first try, so hopefully you will too.
Finally, you'll need some cat food, and a pair of scissors. Without these, any attempts your cat may make to obtain food from your Yoshimatic Cat Feeder will be frustrated.