Season beef. Heat oil in a Dutch oven and brown beef in batches. Remove.
Brown mushrooms 4–5 min. Add onion + pepper; cook 4–5 min. Add garlic + ginger; cook 1 min.
Stir in tomato paste, turmeric + paprika; cook 1–2 min. Add wine, scrape up those good brown bits and reduce 2–3 min.
Return beef. Add stock + thyme. Cover and gently simmer 1½–2 hrs until tender.
Remove thyme. Add sweet potato + lentils. Simmer uncovered 20–25 min until tender. Add more stock if needed.
Whisk miso with ½ cup hot broth; stir into stew. Add chocolate and stir until melted.
Add spinach until wilted. Turn off heat and add lemon. Season to taste.
Serve with pumpkin seeds, parsley, olive oil + lemon.
