Whisk together water, besan flour, sugar, salt, lemon juice, garlic and turmeric.
Heat a small pot on the stove on medium-high. Add oil. Once heated add mustard seeds. Once they begin to pop, add asafetida (hing). Pour the oil mixture into the bowl of besan chutney mixture. Cook on medium while stirring about 5-6 minutes.
Once chutney has thickened turn off gas and serve.
Garlic gives this recipe yummy flavor but feel free to skip