sentence: heat the oil in a saucepan over medium heat sentence: add the ginger carrots and celery and stir fry 2 minutes sentence: add the tomatoes salt sugar and pepper sentence: turn off heat and let the tomatoes cool then puree them in a blender sentence: heat the oil in a saucepan sentence: add the cumin seeds and asafoetida and when the cumin cracks add cilantro and stir for a minute sentence: add the tomato pure and 1 cup of water sentence: when the soup boils turn the heat down and let it simmer for three to four minutes