In a small bowl, combine the beef with sea salt, black pepper, and lime juice to marinate for 10 minutes.
Heat the olive oil in a heavy-bottomed pot over medium-high heat and brown the beef on all sides.
Add the minced garlic, scallions, bell pepper, and parsley to the pot, stirring for 2 minutes until fragrant.
Stir in the tomato paste and cook for another minute to deepen the color.
Add the cubed eggplant, shredded cabbage, and chayote squash along with the water.
Cover the pot and simmer on low heat for 35-45 minutes until the beef is tender and vegetables are very soft.
Remove the softened vegetables from the pot, mash them into a thick paste using a mortar or the back of a spoon, then return them to the pot.
Stir in the fresh spinach and cook for 2 minutes until wilted and the stew is thick and cohesive.