To find the amount of cinnamon in each serving of cider, we start with the total amount of cinnamon used for a batch and divide it by the number of servings.
Owen uses 2 tablespoons of cinnamon for 25 servings.
We can set up the calculation as follows:
\[ \text{Amount of cinnamon per serving} = \frac{\text{Total cinnamon}}{\text{Number of servings}} = \frac{2 \text{ tablespoons}}{25 \text{ servings}} \]
Now, we simplify the fraction:
\[ \frac{2}{25} \]
This fraction is already in its simplest form. Hence, the amount of cinnamon in each serving of cider is:
\[ \frac{2}{25} \text{ tablespoons} \]