Use a deep heavy bottomed pan. I prefer using nonstick
Add butter and turn on the stove on low- medium flame
Furthermore add water and melt the butter
Turn down to low flame and add sugar
Gently spread the sugar. Avoid stirring. Never stir the sugar till you see traces of caramel
If you notice sugar crystalline, use a silicone brush to wipe. Avoid stirring
When you see nice caramel color and 75% of caramel, add coconut, nuts, and cardamom powder; mix well
Turn down to the lowest setting and cook till you smooth caramel
Mix well and check then turn off the stove
Finally, add puffed rice; mix well
I didn't add an extra 1/4 cup. You can add extra till it remains a sticky mass. Avoid adding more as it might affect caramel pori bars texture