In a large heavy pot heat oil and add onion, garlic, celery and fresh herbs. Saute. Add okras and dasheen or spinach leaves. Stir-fry for 2 minutes. Add coconut milk and stock, bring to a boil reduce heat and simmer covered for 45 minutes. Stir in Angostura Bitters Blend soup until smooth; add butter and salt and pepper, stir. To Plate: Pour this delicious concoction into bowls, garnish with fresh coriander leaves and serve.