Does it have to be an infusion - tea? I would think that would taste weird.
If it doesn't have to be tea......can you just eat it on salad everyday? I chop up a bunch of cilantro leaves everyday and eat them on my salad. I love the flavour - it's kinda tangy-lemony. I've got a great recipe for the pesto if you want to try it! It's wonderful on cold (boiled) rice with shaved parmesan to top it off -- or cold pasta

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Got another great recipe with halloumi cheese that entails heaps of cilantro in the dressing (it's kind of a vinagrette that tastes yummmy). Let me know if you're interested. Austin.