They were large, rolled in a flour-based wrapper, deep-fried until crispy and served piping hot. I imagine by the time they were being made in Taiwan, Thailand, Hong Kong and then in the West, ingredients and local tastes altered what people wanted.
In Singapore earlier this year I ate a smaller version called popiah, stuffed with ground pork, peanuts, cabbage and bean sprouts. In Hong Kong I've eaten them stuffed with air-dried pork sausage and water chestnuts. They were still called spring rolls, but they were a world away from their original vegetarian, seasonal great-grandparents.
As I was growing up in Wanganui there was a local Chinese restaurant, where my sister Tracey sometimes worked after school. I think it was called the Peking Cafe. The highlight was when she'd bring back a cardboard box of chow mein - a dish I assumed was what the old emperors must have eaten at their banquets.
The reality, however, is that it really doesn't exist in China as we knew it (all damp wet cabbage, soy and canned water chestnuts with semi-soggy noodles). The translation is "fried noodles" - so grammatically it is correct, but it's likely the dish came into being when immigrants from the Pearl River Delta region of China (home of Cantonese cooking) emigrated to America.
I've spent time in that region of China and I can assure you I never saw anything resembling the chow mein of Wanganui.
Similarly, chicken tikka masala is supposedly Britain's favourite national dish. Actually, it seems to compete against Thai green chicken curry depending which report you read. However, for all the many versions of tikka masala, the only common ingredients seems to be chicken. And although the Brits seem to believe it was an authentic dish from India that was introduced to Britain, it's likely that it was created less that 50 years ago in Glasgow. Other cities claiming they were the birthplace of this "Indian" dish include such well-known foodie destinations as Birmingham and Newcastle. The interesting thing about the dish is that you can now find it back in India and Pakistan at hotels and restaurants catering for British tourists. It's just too hilarious.
So, although the spring rolls you had years ago may have been better than your recent experience, it's likely that neither of them is particularly authentic.
The best bet is to revisit the places that do the food you like, so you can at least expect consistency.
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