Watch this salted egg yolk custard lava bao bun, also known as 流沙包, EXPLODE in Penang, Malaysia! If you're in Penang, Malaysia, this is definitely a street food that you want to try, and see the ...
When risen, press down an egg-sized indentation into each bun and fill with the custard. Brush the bun with beaten egg. Bake for 20 minutes, or until golden-brown.