How to make your own sparkling "soda" drink

This could also be titled "How to make you co-workers (continue) to think you're a freak."

Sometimes, you just need, er want, something sparkly to drink.  Bought some plain soda cans at the store.

Attempt one:
Muddled some fresh mint and fresh ginger, poured the soda water over with some ice.  Good, but not as minty and gingery as one might hope, considering the amount of mint and ginger in it.

Attempt two:
Muddled some fresh mint and fresh ginger, poured about 2-3 tablespoons of hot water over it, let it steep until cool.  Pour the soda water into it with some ice.  Much better.

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