This is the 10405th most frequent Polish word.
cynamonem
"With cinnamon."
Here, 'cynamonem' is used in the instrumental case to specify the source of the scent—cinnamon.
Zaskoczył mnie aromat przechodzący przez kuchnię, pachniało cynamonem.
I was surprised by the aroma wafting through the kitchen; it smelled of cinnamon.
The word 'cynamonem' is in the instrumental case, used to describe what the tea contains—cinnamon.
Jego ulubiona herbata jest z cynamonem.
His favorite tea is with cinnamon.
In this sentence, 'cynamonem' is the instrumental case of 'cynamon,' indicating the medium used for the action of sprinkling.