First wash the vegetables, cut the gobi in florets. Cut the potatoes and tomatoes in big cubes. Remove the seeds of capsicum and cut it in big 1 inch squares. Chop the onions, green chillies and coriander leaves. Grind 1 inch ginger and 7-8 cloves of garlic in a blender by using some water and make a paste of it.
Heat oil in a kadhai or big pan. Add the asafoetida, cumin seeds and turmeric powder into it, saute it and then add potatoes into it. Stir them and cook them covered for 5 minutes.
Add the cauliflower florets in them. Mix well and then add salt into it, mix it and then cook it by covering it for 10 minutes till tender.
Add the onions,green chillies and capsicum, cook it by covering it for 5 minutes till tender. Then add all the dry masalas and ginger-garlic paste into it. Mix them well and cook for 2 minutes stirring in between.
Now add the chopped tomatoes and coriander leaves, mix well and cook for 5 minutes till the tomatoes are tender and soft. At last add kasoori methi, mix it and then switch off the flame.
Gobi dhaba style is ready. Garnish it with some coriander leaves and serve it.