"You have a few options for pineapple here. I've made this recipe using a 20 ounce can of pineapple chunks - draining the juice and reserving 1/4 cup for the recipe and using the pineapple in the tacos. I've also used fresh pineapple and opened one of those small 6-ounce cans of pineapple juice to use in the recipe (using 1/4 cup and reserving the rest to use in a future smoothie or something like that)...."