I have never eaten one of these before, but I have seen them in Cambodia at import supermarkets in the frozen section. Now I know what the inside looks like.
A friendly tip - I realize this is your first post in the ASEAN Hive Community. I checked your comment history and I noticed your engagement with other Hivers outside of your comments is almost non-existent. I recommend you read, comment, and vote on 10 posts for every post you publish, it will contribute to the sustainability of Hive and this community as well.
All Hivers who don't maintain a minimum level of engagement in the ASEAN Hive Community are eventually muted, just a headsup.