‘Mattha’ is basically Maharashtrian Style Spiced Buttermilk. Buttermilk is very common to drink in summer days and if we have little flavors in it, then it will be too tasty. Generally we know Chhas, in Hindi, and to make it we use Chhas Masala. But Mattha is little different from Chhas and can be found in alternate homes in Maharashtra.
This Buttermilk or Taak, in Marathi, used to be flavored with different spices like cumin powder, a little ginger, green chili with just salt and a little sugar. I generally take with lots of ice cubes in very hot summer days.