Bengali Garam Masala is a variant of Indian spice mix Garam Masala and is prepared by grinding three ingredients namely Cinnamon, Green Cardamom and Clove.
Increase or decrease the spices to make big or small batches accordingly.
The ingredients must be fresh and should not contain moisture.
Find it online: https://kitchenofdebjani.com/2019/03/bengali-garam-masala/