ISO Basil, Italian Sausage, Firestick, BL5c batt

That looks like a solid meatball recipe, although I prefer pork or a mix of pork and something else. You can get all those spices in stores in or around the mercado, but for things like fennel seed that are less commonly used here, I like CasAgranel on Paseo Palmar (they are on fb and google maps).

For sausage, I prefer classic southern, simple italian recipes... pork/fat and just salt, pepper, a little garlic, and fennel seed. The main difference is the texture due to a coarser grind and the right kind/ratio of pork fat ground into it at the right temperature. I'm sure that is possible with an amenable carneceria, but I have not invested the time in that relationship yet. Quizás mañana.