Someday, I want to try this recipe: https://www.seriouseats.com/recipes/2013/05/tacos-al-pastor-recipe.html. I haven't had the motivation yet to track down all the ingredients.

However, I've made the tacos arabes recipe that is modified from it: https://www.seriouseats.com/2016/02/how-to-make-mexican-pueblan-tacos-arabes.html. Requires fewer ingredients and I honestly preferred tacos arabes over tacos al pastor on my mission. I've liked this recipe quite a bit. It's not quite as good as the real thing but comes fairly close. I'll probably do it again on the smoker sometime within the next couple of weeks.