That was the fruit I was not sure of but, yeah, I had it in China before: Salak Pondoh!
The name comes from the texture and appearance of the hard but very thin skin. The fruit itself is white and of solid consistence with a smooth brown seed/stone. Two sides of fruit both with a seed each. The taste… this is difficult: not a strong or very distinctive taste. It is quite neutral, not bad and at the same time not a wow like a papaya or mango can make me utter! 🙂