Place the marinated pork al pastor in a single layer.
Cook for 12-14 minutes, stirring halfway through, until the edges are caramelized and the pork reaches an internal temperature of 145°F. Let rest for 3 minutes.
Cut the meat into cubes.
Cook the rice according to your preferred method.
Fluff with a fork and season lightly with salt and a touch of lemon.
Mix the raw spinach with the rice to soften it slightly.
For each container for the week, add ¾ cup of brown rice.
Add ½ cup of spinach.
Place the al pastor pork on top (about 4-6 oz).
Cover with pineapple sauce.
For the achiote sauce: blend cumin, black pepper, allspice, cloves, oregano, garlic, and salt in a blender or mortar until you achieve a coarse texture.
Add the achiote paste and the red chili powder.
Add orange and grapefruit juice and zest, plus lemon juice. Blend until smooth and adjust with water if needed.
For the pineapple salsa: combine pineapple, red onion, jalapeño, and cilantro; add lemon juice and salt; mix and chill for 15-20 minutes.