I bought some 甘梅地瓜 (gān méi dì guā), or just 地瓜 (dì guā), and this is what I got:
They seem to be sweet potato fries. I'm wondering how 甘梅地瓜 translates into "sweet potato fries"?
Google indicates that 地瓜 means "sweet potato", although I always thought that was 红薯 (hóngshǔ). I'm not familiar with 甘梅, and Google translates it to "Gan Mei".