Can we consume spices? What spices do you recommend?

You may use spices but in sparring amounts, as they are heat-producing & rajasic in nature.

You can have the following spices- Ginger, black pepper, cinnamon sticks, cardamom, turmeric, asafoetida, star anise & nutmeg. 

Keep in mind that if you are consuming spices, consume them sparingly, just for the sake of taste.