Was thinking on it, and I’m genuinely surprised there isn’t more tea-related Pokémon content (or Pokémon-related tea content, if you prefer.) I’ve seen a few things, sure - but I mean honest to goodness high concept content. Of course lawyers and cease and desists longer than the Epic of Gilgamesh would prevent any actual sales of Pokéteas, but you could do so much with flavor profiles.
Salazzle, poison/fire - a warm black tea with nutmeg (toxic in large amounts) and cinnamon. Many people are drawn to these warm, inviting smells which is a claim to fame these spices share with Salazzle.
Shiftry, grass/dark - a heavy green tea (or perhaps a gunpowder green) with a lot of woody notes and a hint of wintry pine, keeping it simple while tying it back to its tengu pine forest roots.
Dedenne, electric/fairy - a fun and tart rooibos tea with lots of berry notes, like red currents, to keep it light. It should pack a sharp, but sweet, punch!
Abomasnow, grass/ice - a white tea with wintergreen or spearmint. This could also work with a very light green tea as either way it would remind of frosted greenery. I could literally do this forever but you get the idea.