In a skillet or wok heat the oil and add the cumin seeds until they crackle.
Add the onion and saute for a about 2 mins.
Add the ginger and continue to cook.
Add the spices followed by the tomato paste and cook until all aromatic about 2 minutes.Add a tbsp of water if its sticks to your pan.
Continue to cook for about 5-6 minutes until the paste doesn't stick to the pan and oil starts to separate from the sides.
Add the cabbage and fennel along with salt.Mix well.
Cover and continue to cook stirring every few mins until evenly cooked.