Place Ginger and garlic in blender or food processor
Add 1/2 Cup water blend until smooth
Put oil in skillet when hot add cumin seed then add crushed chile. When it darkens add garlic puree. Cook 1 Minute then add corriander.
Add chopped tomatoes crush with spoon
Add Beans and remaining water. bring to simmer
Add lemon juice and toasted ground cumin seeds and pepper
Turn up heat reduce until no liquid then serve