Wow, the intersection of the set of Taipei or Taiwan and the set of Indian sweets doesn’t turn up much on google. But there’s a little bit there.
My Chinese is almost nil, but as near as I can tell by using babelfish, this Taiwanese apparently bought barfi, and Indian pastry, here in Taiwan:
mypaper.pchome.com.tw/news/rev/3 … 220042437/
If you can’t buy it, the recipe for barfi is here:
recipesource.com/ethnic/asia … barfi.html
There are other Indian (and Pakistani) recipes on the same website, but I don’t know enough about it to know whether there are any good desserts on this page:
recipesource.com/ethnic/asia … exall.html
Someone named Monideepa Banerjee has done articles with photos about Indian life and culture for the Department of Information of the Taipei City Government. See, e.g., doi.tcg.gov.tw/reading_disco … sp?seqno=8
Maybe you could get in touch with this person through them.
Also, the Evergreen Healthy Vegan Association, in Taipei and Hsinchu, may have information about Indian foods / grocery shops. See the bottom of the page at ehva.org/newsletter/html/22.htm
Hope this helps, sorry I couldn’t find anything more to the point. Maybe someone else will give you better info.