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However, the question becomes somewhat more interesting when we consider this loose-leaf shupu. The same shopkeeper claims that he bought this when he started the shop, which was in 1994. It was an interesting comparison between this tea and the 1997 Maguan Panguwang. Note that the vulgar red box [pictured] is a left-over that a Beijing friend left behind, which turned out to be just the right size.
My a priori assumption is that shupu may peak at around 10 years.
Caledonian Springs @ 100C in 15cl shupu pot; ~5g leaf; 2 rinses
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Tiny tips, exclusively, looking like baby fishing bait. A range of darknesses with some lighter browns. A full shupu aroma.
15s, 15s, 25s, 40s, 60s, > 90s:
The soup is golden orange, unlike the pure burgundy of the Maguan Panguwang. The aroma is creamy, and crisp - decent shupu. The flavour is where the interest lies, as the smoothness of the Maguan Panguwang is met and exceeded. The overall impression is of smooth pine. It isn't a strong tea, though, and borders on being too gentle. Is this over-aging of a loose-leaf? I am reminded of the 1960s Gaolingongshan maocha, which is rapidly losing its flavour.
This is a surprisingly active tea. For those interested in / credible of chaqi, it might be worth trying this one - there is a significant effect felt even from the aroma, which condensates fairly heavily on the back of the tongue. "The tips of my fingers are pulsating and tingling strongly."
The soup fades to a mid-orange after five infusions, clearly lacking the pace to continue.
Wet leaves:
Dark, tiny, unsurprising.
Overall:
We had considered getting the little that the shopkeeper has remaining of this tea, but given that it will take some time to consume what we have, the reduction in strength yet further would not be worthwhile.
Compared to the Maguan Panguwang, allegedly 3 years younger, it is yet finer, smoother, and more rarified - but it has turned a corner. The chaqi is full and flushing, but (perhaps fortunately) it doesn't perform as well as the tea that Lei bought in quantity. I should credit her with good judgement at this point, of course.
Is it 1994? It's certainly older than the Maguan Panguwang, which feels older than 5-7 years. I'll leave that question on the shelf for a rainy day.