Their shape and look can resemble some homemade soap bar slices. At room temperature, their sweetness and texture reminds me of microwaved red bean cake. :meow-melt:
They came in a variety of looks. They could be one solid color, opaque, slightly translucent, have red beans and/or black sesame inside, or be striped like the above pic. Mainly saw them in the colors white, green, brownish-red, brown, pink, and dark grey w/ black specks.
I think this is an indonesian thing, not chinese. Coconut jelly? I had it from indonesian and burmese restaurants here.
I also had something similar from Hainan island. if it's the same thing you mean, it's not really mochi-like, more gelatinous.
edit: is it this ?
No jelly. Just stretchy-ness and softness. It jiggled but it wasn't gelatin-like.
I see great similarity in some pictures of kue lapis, but a lot of bright colors. I never saw a vendor sell the food I'm looking for in bright colors other than magenta and matcha green.