Soak the garlic in water for 5 mins, peel the skin.
Heat a nonstick pan with 1 tsp of cooking oil. Chop the garlic and sauté in hot oil. Simmer for 5 - 7 mins, while you keep stirring in intervals. Roast till the garlic turns soft or brown. Remove to a plate.
Add urad dal to the pan, no need to add oil. Sauté well. When the urad dal starts browning, you can remove it to the same plate.
Then, add dry red chilies. Quickly saute in the hot pan, if you notice there is no need to add cooking oil for this also. Once it's browned on all sides, remove and allow it to cool.
Once all the ingredients reach room temperature, take them in a blender and add salt and blend to a smooth paste. If the mixer you use is not small enough to blend this to a smooth paste, you can add little cooking oil to aid it.